-ol bbb bbc bbh bbl bbm bbo bbr bcb bcc bch bcl bcm bco bcr bhb bhc bhh bhl bhm bho bhr blb blc blh bll blm blo blr bmb bmc bmh bml bmm bmo bmr bob boc boh bol bom boo bor brb brh brl brm bro brr c-- cbb cbc cbh cbl cbm cbo cbr ccb ccc cch ccl ccm cco ccr ch- chb chc chh chl chm cho chr cl- clb clc clh cll clm clo clr cmb cmc cmh cml cmm cmo cmr co- cob coc coh col com coo cor crb crc crh crl crm cro crr hbb hbc hbh hbl hbm hbo hbr hcb hcc hch hcl hcm hco hcr hhb hhc hhh hhl hhm hho hhr hlb hlc hlh hll hlm hlo hlr hmb hmc hmh hml hmm hmo hmr hob hoc hoh hol hom hoo hor hr- hrb hrc hrh hrl hrm hro hrr lbb lbc lbh lbl lbm lbo lbr lcb lcc lch lcl lcm lco lcr lhb lhc lhh lho lhr llb llc lll llm llo llr lmb lmc lmh lml lmm lmo lmr lob loc loh lol lom loo lor lrb lrc lrh lrm lro lrr m-o m-r mbb mbc mbh mbl mbm mbo mbr mc- mcb mcc mch mcl mcm mco mcr mhc mhh mhl mhm mho mhr mlb mlc mlh mll mlm mlo mlr mmb mmc mmh mml mmm mmo mmr mob moc moh mol mom moo mor mrb mrc mrh mrl mrm mro mrr ob- obb obc obh obl obm obo obr oc- ocb occ och ocl ocm oco ocr ohc ohh ohl ohm oho ohr olb olc oll olm olo om- omb omc omh oml omm omo omr oo- oob ooc ooh ool oom ooo oor or- orb orc orh orl orm oro orr rbb rbc rbh rbl rbm rbo rbr rcb rcc rch rcl rcm rco rcr rh- rhb rhc rhh rhl rhm rho rhr rlc rlh rll rlm rlo rlr rmb rmc rmh rml rmm rmo rmr rob roc roh rol rom roo ror rrb rrc rrh rrl rrm rrr