20 491
DCCBBHCGD
CCBGBFHGABA
FEAFGAE
CDADCHD
ADCAAEF
AFDBBBCGG
ACDFHGCCE
DBEFCAH
BFFAEDD
BGCAGCGH
ACGADEAE
CEEBAAC
FFCDFAF
EFEDEHCA
EDAEGEAGBFE
FHCGAHABCFB
DEADCCABFA
ACAEDHFG
ECFECGEAG
FGFFCGHEBFB
CFEEBFCFDEH
CBBACEBBG
HCAAHFAAAC
AFACGHGCAAH
AGHEEDEDAE
BDGCFGD
CCBGGEG
AFEFGBG
EHCAAHFAAAC
DECFECGEAGE
BGGEGEBAA
BDFHHFF
BCFDGBHEFDC
EECCADA
EACBDHFH
GADEBEDFA
GCFGDBFE
GADEAEFEDEH
CFBDGHGEED
ABCFBDGHG
BABDEDDBACF
AAEBAGAEAE
CBGGEGEB
AEFBDEAC
BACAEDHFGC
CHCFHHD
CEBBGCAGCGH
FDDDAHB
DHDAFBA
FCCBGBFH
ACGHGCAAHGC
CDHHBBHCGFG
DBACEDGHEB
BFBGBAE
BDAFEFG
FAFEFBBEAFE
FDCDBACEDG
FGCFFHAA
EDAEBDFHHF
EBAGAEA
GEDEADCC
ACDFHGCC
HEEDEDA
CFHBBCD
AEBDFHHF
FBEBEGGD
HGEEDEHFH
BCBFGFG
DGHGEED
GHEGEDD
CCADACBDDB
DFEBBDC
FEDEHCAAHFA
HBFAGGADHDF
CGBACCBE
CHEHAHBDGCF
GCGHGAGBGCB
EEAGGCGGHB
EAECBGA
GCGGHBGFBHD
HBDGCFG
FBEBEGGD
BDEDDBA
FGFCCBGBFH
FEFHFDAGEBF
HFGFCCBGBF
DEBCCEDBEFC
BFBCDFCBAAA
GBACCBEG
ACBDHFH
FDAGEBFE
EBCCEDBEF
HFHEFDDAGED
FHHCCHDFE
AHBDGCFGDBF
AFBFFFAA
GCCECAF
GGDCFBFFAED
FHFDAGEBFE
DBBBCGGADEB
DBEEAAFEE
DFHHFFD
BDEACFEE
AACAAFACGHG
FHCGAHABCF
DGDCHEH
HDFEHCHC
DAGEBFE
HHCCHDFEB
EAFBDDEE
CCBEGHGA
FAADDGH
FHGCCECAFEE
AEHFGFCCB
AECBGAHDEB
BBCFEBBF
BCGGADEB
DDBFDBEE
FEEHBAA
AFHCGBACCB
GEAGEFDC
BGDCGHFHHG
AHECHHD
HFGFCCBG
EDAEFBDEACF
EBFBCDF
FCGHEBFB
FCDFAFEFB
GBDCHAFEA
BBHCGFG
FGFCCBG
ECGEAGEF
FECGEAGEFDC
CFHHDHBFAGG
DGCFGDBFEB
DDGHDBCBC
EADCAAEFGB
BAHECHHD
BHCGDECF
BHEFDCDBAC
EAEHFGFC
EAAFEEC
CEDGHEBCF
ADACBDD
CBGGEGEBAA
CBDHFHHC
CCBBHCG
BDCHAFEA
GADEBED
HEFDCDBA
DEBAEFCEBHG
FAFEFBBEA
FCAHFDFAGEH
BFEBDGDCHEH
EFDCDBACED
HDEBCCE
FAFHCGBA
DAHBDBBEA
EFFCDFAF
DHFHHCCHDFE
AAEBAGA
BEACDHH
FHBBCDADCHD
FHBGBCB
GHEGEDDH
DFDCBBC
EAFEACBEAC
FFDACAGH
DCCCAEECFG
BGHHEDHD
CFHBBCDADC
FEDAEGEAG
AGEHDEB
EHFGFCCBGB
CEBHGAAHCC
FEACBEAC
FCGHEBFBGB
AGEDEADC
HGDAABDAFEF
AADDGHD
CGDECFE
FAAFDBBB
CCEEACED
AHECHHDCC
BDEACFE
FHHGDAABDAF
CDFCBAAAEG
AFEACHBE
GDCHEHAHB
EAFBDDEECG
AEGBGBDHB
EGEBBAHCADA
CGHEBFB
BDDEECG
EDEADCCA
FAFEFBBEAFE
AEDDHEEFB
DEECGDD
AHAFFFCDCE
AGGADHD
HEBFBGBAEA
BBGCAGCGH
EAFGAEFFCDF
FDCDBACE
DCHEHAHBD
FGDBFEBD
BBDCAEACBDH
BBFDBGHHEDH
BFEBDGDCHEH
HGABABA
BBGCAGCGHGA
GBGCBBACEBB
GEBFEDAE
BBCDADC
GEAFEACBEAC
BACAEDHFG
FFHAAAH
EFDCCBB
AADDGHDBC
DADCHDBA
GGDCFBFF
EGEDDHDBFHB
BGHHEDHDF
HDHBFAG
BDDBFDB
FDCDBAC
DACBDDBFDB
CCBBHCGDECF
BCCDDAFBF
BFHGABAB
HDFEHCHCF
CFGDGHC
GBDCHAFEAC
HDEBFDAAEB
FDDAGEDE
GEHDEBCCE
BCEFFCHDF
CBBCFEBBF
DEHEDAEFB
DAABDAFEFGB
AGGCGGHBG
AEDHFGC
DDHEEFBEB
CCBGGEGEBAA
BABAEAEHFGF
FACGHGCAA
ABAEAEHF
CBGBFHGA
CDFAFEFB
EAFEACBEAC
GDCFBFF
DEBCCEDB
DECFECGEAG
DAGEDEADC
AHBDGCF
FAAACGA
HBGBCBFGF
GBDHBEBFB
HEEFBEBEGG
BBAHCADAHA
EDAEBDFHHF
FGDGHCCEE
GFFCGHEB
EADCCABFA
FDBBBCGGAD
DGCFGDBFEB
ACGHGCAAHGC
EFAAFDBBBCG
CFFHAAA
EEDEHFH
BFDAAEBA
CDBACEDGHEB
BFDBGHHE
BEDFAEFA
AEGBGBDH
CAEECFGDGHC
EBDGDCHEHA
DCCABFAHF
DFDCBBCFE
AEHDFFAF
CEDGHEB
GAEFFCD
AHBDBBEABC
EAGBFEFHFD
CDDAFBFFFAA
HHCCHDFE
AFFFCDC
BBCDADCH
BBHCGDEC
BFDBGHHED
ADHDFEHCH
EACEDCCC
ECFECGE
DGCFGDB
FACGHGC
AGGCGGH
HBAABAACDF
BGBDHBEBFBC
EECCADAC
CAEACBDHF
FEAFBDDEEC
GGHBGFBHDG
EFAAFDBBBC
CGHGAGBGCB
ECHHDCCBGGE
ADCAAEFGBD
CBDHFHHCC
HFGCFFHAAAH
DAFBABDEDD
AEAFBCD
BAHAHDE
EEAGGCGGHBG
FCGHEBFB
FEAFGAEFFC
GHGAGBGCB
CGFGEAFEAC
DDBACFGC
EBFEDAEG
GEAGEFDCC
AAHADDBAC
FCDCEEG
FEEHBAA
DFHGCCECA
HBFAGGA
HCFHHDHBFAG
BAACDFHGCCE
DDHEEFBE
HDBAHAHDEG
BAHAHDE
BAACDFHGCC
CFFHAAAHADD
CEEGEBBAHC
CGGHBGFBHDG
BGAHDEBFD
EBAAGBAH
CGHFHHGDAAB
CECAFEE
AEFFCDF
BAEFCEB
FBCDFGFFCGH
DHDFEHCHCFH
DDBACAEDHF
BBHCGDEC
BDAFEFGBGD
EHAHBDG
GEGEBAAG
FDEEAGGCGG
GABABAEAE
DFGFFCG
BBCGGADEBED
BBGCAGCGHGA
FFAFHCG
FHGCCECAFE
GEGEBAAGBA
AAGBAHECH
GCAAHGCEE
HBEBFBCD
DAFBFFFAADD
AFEAFGAEFF
DAFBFFFAA
GEDDHDBFHBG
HEHAHBDG
HCCEEACE
AFFFCDC
BAABAACDF
GHEBFBG
AHFHEFDDAGE
FGFFCGHEBFB
BFEBDGDC
HHEDHDFD
FAFHCGBACCB
CBGGEGEB
BHEFDCD
GBHEFDCDBA
DFDCBBC
HDHBFAGGADH
DFEHCHC
CDFCBAA
EHCAAHFAA
GHGEEDE
FGCGBDHDA
HEFDCDB
EBCCEDB
FGDGHCC
BAGAEAEC
EBFBGBAE
BBHCGFG
AFHCGBACCBE
AHCADAHA
FDGBHEFD
GFBHDGCB
FFFCDCEE
AEACBDHFH
DFCBAAAEGB
BFEFHFD
BFFAEDDHEE
FGDBFEB
FAAACGADEAE
DCFBFFAEDDH
HBAABAAC
FACGHGCAAHG
FHHDHBFAGG
BFDBEEAAFEE
ACAAFACGHG
DACBDDB
EGCFHBBCDA
HBAABAACDFH
GHEBFBGBA
GFGEAFE
DEAEFED
DBACAED
BDDBFDBE
HCFHHDHBFA
BFBCDFCBAA
GCFGDBFE
DAFBABDEDDB
FDGBHEFDCDB
DCAAEFGB
ACBDHFHH
BAACDFHGCCE
CFHBBCDADCH
EEDHFEAFB
EHBAABA
DCHAFEA
FDEEAGGC
DAFBFFFA
HEDHDFDC
AGEHDEBCCE
EFGBDCH
DGHGEED
FBDGHGEEDEH
HFHEFDD
DBAHAHD
DBAHAHDEGCF
EECFGDGHCCE
DGDCHEHAH
AECBGAHDEB
AGAEAEC
AADDGHD
FCEBHGAAHCC
DBCBCCD
BDCAEACB
DHEEFBEBE
FHBGBCB
DAEFBDEA
BFEDAEGEAG
BGBCBFGFG
DAGEDEA
GDDBHFEE
FCCBGBFHGAB
HCGFGEAFEA
EDEHFHCG
AHDEGCF
HBEADCA
DAEBDFHHFF
AEGEAGBFEFH
DBFHBGB
EFDCCBBH
EECGDDB
GDCHEHAHB
EDFAEFA
HDEBFDAAEB
EDDHDBFHBG
CGFGEAF
GGADHDF
AFDBBBCGGAD
DCBBCFEBBF
FFHAAAHA
CDHHBBH
EDAEGEAGBF
HCADAHAF
FEEDHFEAF
HHFFDAC
FEACHBEADCA
DFDCBBCFEBB
BHDGCBFDEEA
BCFEBBFDBG
FHBBCDADC
BDGDCHEHA
BCGGADEB
HDBFHBGBCBF
HBFAGGADH
CHBEADC
DHFEAFBDDE
BAHAHDEG
EEDHFEAFBD
AFDBBBCG
DEHFHCG
HGAGBGC
GDBFEBDGDCH
FEAFBDDE