-er a-a a-b a-q aaa aab aae aam aao aaq aar ab- aba abb abe abm abo abq abr aea aeb aee aem aeo aeq aer ama amb ame amm amo amq amr aoa aob aoe aom aoo aor aqa aqm aqo aqr ar- ara arb are arm aro arq arr baa bab bae bam bao baq bar bba bbb bbe bbm bbo bbq bbr be- bea beb bee bem beo beq ber bma bmb bme bmm bmo bmq bmr boa bob boe bom boo boq bor bqe bra brb bre brm bro brq brr eaa eab eae eam eao ear eba ebb ebe ebm ebo ebq ebr eea eeb eee eem eeo eer em- ema emb eme emm emo emr eo- eoa eob eoe eom eoo eoq eor eqa eqe eqq era erb ere erm ero erq err m-o m-r maa mab mae mam mao mar mba mbb mbe mbm mbo mbq mbr mea meb mee mem meo meq mer mma mmb mme mmm mmo mmr moa mob moe mom moo mor mqa mqb mqr mra mrb mre mrm mro mrq mrr oaa oab oae oam oao oaq oar ob- oba obb obe obm obo obr oea oeb oee oem oeo oer om- oma omb ome omm omo omr oo- ooa oob oom ooo oor oqb oqo or- ora orb ore orm oro orr qaa qam qar qba qbe qbq qee qem qeo qma qme qmr qom qoo qor qqq qra qrb qre qrm ra- raa rab rae ram rao raq rar rba rbb rbe rbm rbo rbr re- rea reb ree rem reo req rer rma rmb rme rmm rmo rmq rmr roa rob roe rom roo ror rqm rra rrb rrm rrq rrr