-er a-a a-b aaa aab aae aaj aam aao aar ab- aba abb abe abj abm abo abr aea aeb aee aej aem aeo aer aja ajb aje ajj ajm ajo ajr ama amb ame amm amo amr aoa aob aoe aoj aom aoo aor ar- ara arb are arj arm aro arr baa bab bae baj bam bao bar bba bbb bbe bbm bbo bbr be- bea beb bee bem beo ber bja bjj bjm bjr bma bmb bme bmj bmm bmo bmr boa bob boe boj bom boo bor bra brb bre brj brm bro brr eaa eab eae eaj eam eao ear eba ebb ebe ebj ebm ebo ebr eea eeb eee eem eeo eer eja ejo em- ema emb eme emm emo emr eo- eoa eob eoe eom eoo eor era erb ere erm ero err jaa jab jae jaj jam jao jar jba jbj jbm jbo jbr jea jeb jee jej jem jeo jer jja jjb jjj jjr jma jmb jme jmj jmm jmo jmr joa job joe joj jom joo jor jra jrb jrm jro jrr m-o m-r maa mab mae maj mam mao mar mba mbb mbe mbj mbm mbo mbr mea meb mee mej mem meo mer mjb mje mjj mjm mjr mma mmb mme mmj mmm mmo mmr moa mob moe mom moo mor mra mrb mre mrj mrm mro mrr oaa oab oae oaj oam oao oar ob- oba obb obe obj obm obo obr oea oeb oee oem oeo oer oja ojb oje ojm ojo om- oma omb ome omj omm omo omr oo- ooa oob oom ooo oor or- ora orb ore orm oro orr ra- raa rab rae raj ram rao rar rba rbb rbe rbm rbo rbr re- rea reb ree rem reo rer rja rjm rjr rma rmb rme rmm rmo rmr roa rob roe roj rom roo ror rra rrb rrm rrr