bbb bbc bbd bbn bbr bcb bcc bcd bcn bcr bdb bdc bdd bdr bnb bnc bnd bnn bnr brb brd brn brr c-- cbb cbc cbd cbn cbr ccb ccc ccd ccn ccr cdb cdc cdd cdn cdr cn- cnb cnc cnd cnn cnr crb crc crd crn crr dbb dbc dbd dbn dbr dcb dcc dcd dcn dcr ddb ddc ddd ddn ddr dnb dnc dnd dnn dnr drb drc drd drn drr nbb nbc nbd nbn nbr ncb ncc ncd ncn ncr ndb ndc ndd ndn ndr nnb nnc nnn nrb nrc nrd nrn nrr rbb rbc rbd rbn rbr rcb rcc rcd rcn rcr rdb rdc rdd rdn rdr rnb rnc rnd rnn rnr rrb rrc rrd rrn rrr

bbbb bbdd bbrc bcbc bccc bd-r bdbc bddc bnrr brcb brrr c-cd cbbc cbcc cbcn cbcr cbdb cbdc cbdn cbnd cbrd cbrn ccbc ccbn cccb cccc ccdc ccdn ccdr ccnb ccnc ccnr ccrc cd-r cddb cddr cdnb cdnc cnbc cndd cnrc cnrr crbc crcc crcr crdc dbcc dbrn dcbc dccb dccc dcdb dddd ddrc dnrc drbc nbbc nbcc ncbc nccc nccn nccr ncdc ncdn ncdr ncnc ncnd ncrc ndcc nddb ndrc nndb nnnn nrdc nrrc nrrd rbbb rbbr rcbc rccb rccc rcdc rcnr rcrd rnbr rndc rrrr

brrrr ccccc cnnnn ddddd

bbbbbb

bbbbbbb

bbbbbbbb

ddddddddd

bbbbbbbbbbbbbbb ccccccccccccccc