-ic bbb bbc bbd bbh bbi bbk bbo bbs bcb bcc bcd bch bci bck bco bcs bdb bdc bdd bdh bdi bdk bdo bds bhb bhc bhd bhh bhi bhk bho bhs bi- bib bic bid bih bii bik bio bis bkb bkc bkk bko bks bob boc bod boh boi bok boo bos bsb bsc bsd bsh bsi bsk bso bss c-- cbb cbc cbd cbh cbi cbk cbo cbs ccb ccc ccd cch cci cck cco ccs cdb cdc cdd cdh cdi cdk cdo cds ch- chb chc chd chh chi chk cho chs ci- cib cic cid cih cii cik cio cis ckb ckc ckd ckh cki cko cks co- cob coc cod coh coi cok coo cos csb csc csd csh csi csk cso css dbb dbc dbd dbh dbi dbk dbo dbs dcb dcc dcd dci dck dco dcs ddb ddc ddd ddh ddi ddk ddo dds dh- dhb dhc dhd dhh dhi dhk dho dhs di- dib dic did dih dii dik dio dis dkb dkc dki dkk dko dks dob doc dod doh doi dok doo dos dsb dsc dsd dsh dsi dsk dso dss h-i hbb hbc hbd hbh hbi hbk hbo hbs hcb hcc hcd hch hci hck hco hcs hdb hdc hdd hdh hdi hdk hdo hds hhb hhc hhd hhh hhi hhk hho hhs hib hic hid hih hii hik hio his hkb hkd hkh hki hkk hko hks hob hoc hod hoh hoi hok hoo hos hsb hsc hsd hsh hsi hsk hss i-d ibb ibc ibd ibh ibi ibk ibo ibs icb icc icd ich ici ick ico ics idb idc idd idh idi idk ido ids ihb ihc ihd ihh ihi ihk iho ihs iib iic iid iih iii iio iis ikb ikc iki ikk iko iks io- iob ioc iod ioh ioi ioo ios is- isb isc isd ish isi isk iso iss kbb kbc kbd kbh kbi kbk kbo kbs kcb kcc kcd kch kci kck kcs kdb kdc kdh kdk kdo kds khh khi khk kho khs kib kic kid kih kii kik kio kis kkb kkc kkh kki kkk kks kob koc kod koh koi kok koo kos ksb ksc ksd ksh ksi ksk kso kss o-i ob- obb obc obd obh obi obk obo obs oc- ocb occ ocd och oci ock oco ocs odb odc odd odh odi odo ods ohc ohd ohh ohi oho ohs oib oic oid oii oik oio ois okb okc okd oki okk oko oks oo- oob ooc ood ooh ooi ook ooo oos os- osb osc osd osh osi osk oso oss sbb sbc sbd sbh sbi sbk sbo sbs scb scc scd sch sci sck sco scs sdb sdc sdd sdh sdi sdk sdo sds sh- shb shc shd shh shi shk sho shs sib sic sid sih sii sik sio sis sk- skb skc skd skh ski skk sko sks sob soc sod soh soi sok soo sos ss- ssb ssc ssd ssh ssi ssk sso sss