a-a a-b a-i aaa aab aai aam aao aas aau ab- aba abb abi abm abo abs abu ai- aia aib aii aim aio ais aiu ama amb ami amm amo ams amu aoa aob aoi aom aoo aos aou as- asa asb asi asm aso ass asu au- aua aub aui aum auo aus b-u baa bab bai bam bao bas bau bba bbb bbi bbm bbo bbs bbu bi- bia bib bii bim bio bis biu bma bmb bmi bmm bmo bms bmu boa bob boi bom boo bos bou bsa bsb bsi bsm bso bss bsu bua bub bui bum buo bus buu ia- iaa iab iai iam iao ias iau iba ibb ibi ibm ibo ibs ibu iia iib iii iim iio iis iiu im- ima imb imi imm imo ims imu io- ioa iob ioi iom ioo ios iou is- isa isb isi ism iso iss isu iu- iua iub iui ium ius m-o maa mab mai mam mao mas mau mba mbb mbi mbm mbo mbs mbu mi- mia mib mii mim mio mis miu mma mmb mmi mmm mmo mms mmu moa mob moi mom moo mos mou msa msb msi msm mso mss msu mua mub mui mum mus muu o-i oaa oab oai oam oao oas oau ob- oba obb obi obm obo obs obu oia oib oii oim oio ois oiu om- oma omb omi omm omo oms omu oo- ooa oob ooi oom ooo oos os- osa osb osi osm oso oss osu ou- oua oui oum ouo ous saa sab sai sam sao sas sau sba sbb sbi sbm sbo sbs sbu sia sib sii sim sio sis siu sma smb smi smm smo sms smu soa sob soi som soo sos sou ss- ssa ssb ssi ssm sso sss ssu sua sub sui sum suo sus suu ua- uaa uab uai uam uao uas uau uba ubb ubi ubo ubs ubu uia uib uii uim uio uis uiu um- uma umb umi umm umo ums umu uoa uob uom uoo uos usa usb usi usm uso uss usu uua uum uus uuu