-ol bbb bbc bbd bbh bbl bbn bbo bbs bcb bcc bcd bch bcl bcn bco bcs bdb bdc bdd bdh bdl bdo bds bhb bhc bhd bhh bhl bho bhs blb blc bld blh bll bln blo bls bnb bnc bnd bnl bnn bno bns bob boc bod boh bol bon boo bos bsb bsc bsd bsh bsl bsn bso bss c-- cbb cbc cbd cbh cbl cbn cbo cbs ccb ccc ccd cch ccl ccn cco ccs cdb cdc cdd cdh cdl cdn cdo cds ch- chb chc chd chh chl chn cho chs cl- clb clc cld clh cll cln clo cls cn- cnb cnc cnd cnh cnl cnn cno cns co- cob coc cod coh col con coo cos csb csc csd csh csl csn cso css dbb dbc dbd dbh dbl dbn dbo dbs dcb dcc dcd dcl dcn dco dcs ddb ddc ddd ddh ddl ddn ddo dds dh- dhb dhc dhd dhh dhl dho dhs dl- dlb dlc dld dlh dll dlo dls dnb dnc dnd dnh dnl dnn dno dns dob doc dod doh dol don doo dos dsb dsc dsd dsh dsl dsn dso dss hbb hbc hbd hbh hbl hbn hbo hbs hcb hcc hcd hch hcl hcn hco hcs hdb hdc hdd hdh hdl hdn hdo hds hhb hhc hhd hhh hhl hhn hho hhs hlb hlc hld hlh hll hln hlo hls hnb hnc hnd hnh hnl hnn hno hns hob hoc hod hoh hol hon hoo hos hsb hsc hsd hsh hsl hsn hss lbb lbc lbd lbh lbl lbo lbs lcb lcc lcd lch lcl lcn lco lcs ldb ldc ldd ldh ldl ldn ldo lds lhb lhc lhd lhh lho lhs llb llc lld lll lln llo lls lnb lnc lnd lnh lnl lnn lno lns lob loc lod loh lol lon loo los lsb lsc lsd lsh lsl lsn lso lss nbb nbc nbd nbl nbn nbo nbs ncb ncc ncd nch ncl ncn nco ncs ndb ndc ndd ndh ndl ndn ndo nds nhb nhc nhd nhh nhl nhn nhs nlb nlc nld nlh nll nln nlo nls nnb nnc nnh nnl nnn nno nns no- nob noc nod noh nol non noo nos nsb nsc nsd nsh nsl nsn nso nss ob- obb obc obd obh obl obn obo obs oc- ocb occ ocd och ocl ocn oco ocs odb odc odd odh odl odn odo ods ohc ohd ohh ohl ohn oho ohs olb olc old oll oln olo ols on- onb onc ond onh onl onn ono ons oo- oob ooc ood ooh ool oon ooo oos os- osb osc osd osh osl osn oso oss sbb sbc sbd sbh sbl sbn sbo sbs scb scc scd sch scl scn sco scs sdb sdc sdd sdh sdl sdn sdo sds sh- shb shc shd shh shl shn sho shs slb slc sld slh sll sln slo sls snb snc snd snl snn sno sns sob soc sod soh sol son soo sos ss- ssb ssc ssd ssh ssl ssn sso sss