a-a a-b a-i a-t aaa aab aai aam aao aar aat aau ab- aba abb abi abm abo abr abt abu ai- aia aib aii aim aio air ait aiu ama amb ami amm amo amr amt amu aoa aob aoi aom aoo aor aot aou ar- ara arb ari arm aro arr art aru at- ata atb ati atm ato atr att atu au- aua aub aui aum auo aur aut b-u baa bab bai bam bao bar bat bau bba bbb bbi bbm bbo bbr bbt bbu bi- bia bib bii bim bio bir bit biu bma bmb bmi bmm bmo bmr bmt bmu boa bob boi bom boo bor bot bou bra brb bri brm bro brr brt bru bta btb bti btm bto btr btt btu bua bub bui bum buo bur but buu ia- iaa iab iai iam iao iar iat iau iba ibb ibi ibm ibo ibr ibt ibu iia iib iii iim iio iir iit iiu im- ima imb imi imm imo imt imu io- ioa iob ioi iom ioo ior iot iou ir- ira irb iri irm iro irr irt iru ita itb iti itm ito itt itu iu- iua iub iui ium iur iut m-o m-r maa mab mai mam mao mar mat mau mba mbb mbi mbm mbo mbr mbt mbu mi- mia mib mii mim mio mir mit miu mma mmb mmi mmm mmo mmr mmt mmu moa mob moi mom moo mor mot mou mra mrb mri mrm mro mrr mrt mru mta mtb mti mtm mto mtr mtt mtu mua mub mui mum mur mut muu o-i oaa oab oai oam oao oar oat oau ob- oba obb obi obm obo obr obt obu oia oib oii oim oio oir oit oiu om- oma omb omi omm omo omr omt omu oo- ooa oob ooi oom ooo oor oot or- ora orb ori orm oro orr ort oru ot- ota otb oti otm oto otr ott otu ou- oua oui oum ouo our out ra- raa rab rai ram rao rar rat rau rba rbb rbi rbm rbo rbr rbt rbu ria rib rii rim rio rir rit rma rmb rmi rmm rmo rmr rmt roa rob roi rom roo ror rot rou rra rrb rri rrm rrr rrt rru rta rtb rti rtm rto rtr rtt rtu rua rub rui rum ruo rur rut ruu taa tab tai tam tao tar tat tau tba tbb tbi tbm tbo tbr tbt tbu tia tib tii tim tio tir tit tiu tma tmb tmi tmm tmo tmr tmt tmu to- toa tob toi tom too tor tot tou tra trb tri trm tro trr trt tru tta ttb tti ttm tto ttr ttt ttu tua tub tui tum tuo tur tut tuu ua- uaa uab uai uam uao uar uat uau uba ubb ubi ubo ubr ubt ubu uia uib uii uim uio uir uit uiu um- uma umb umi umm umo umr umt umu uoa uob uom uoo uor uot ur- ura urb uri urm uro urr urt uru uta utb uti utm uto utr utt utu uua uum uur uut uuu