-al -ol a-a a-b a-c aaa aab aac aal aam aao aar ab- aba abb abc abl abm abo abr ac- aca acb acc acl acm aco acr al- ala alb alc all alm alo alr ama amb amc aml amm amo amr aoa aob aoc aol aom aoo aor ar- ara arb arc arl arm aro arr baa bab bac bal bam bao bar bba bbb bbc bbl bbm bbo bbr bca bcb bcc bcl bcm bco bcr bla blb blc bll blm blo blr bma bmb bmc bml bmm bmo bmr boa bob boc bol bom boo bor bra brb brl brm bro brr c-- caa cab cac cal cam cao car cba cbb cbc cbl cbm cbo cbr cca ccb ccc ccl ccm cco ccr cl- cla clb clc cll clm clo clr cma cmb cmc cml cmm cmo cmr co- coa cob coc col com coo cor cra crb crc crl crm cro crr la- laa lab lac lal lam lao lar lba lbb lbc lbl lbm lbo lbr lca lcb lcc lcl lcm lco lcr lla llb llc lll llm llo llr lma lmb lmc lml lmm lmo lmr loa lob loc lol lom loo lor lra lrb lrc lrm lro lrr m-o m-r maa mab mac mal mam mao mar mba mbb mbc mbl mbm mbo mbr mc- mca mcb mcc mcl mcm mco mcr mla mlb mlc mll mlm mlo mlr mma mmb mmc mml mmm mmo mmr moa mob moc mol mom moo mor mra mrb mrc mrl mrm mro mrr oaa oab oac oal oam oao oar ob- oba obb obc obl obm obo obr oc- oca ocb occ ocl ocm oco ocr ola olb olc oll olm olo om- oma omb omc oml omm omo omr oo- ooa oob ooc ool oom ooo oor or- ora orb orc orl orm oro orr ra- raa rab rac ral ram rao rar rba rbb rbc rbl rbm rbo rbr rca rcb rcc rcl rcm rco rcr rla rlc rll rlm rlo rlr rma rmb rmc rml rmm rmo rmr roa rob roc rol rom roo ror rra rrb rrc rrl rrm rrr