a-a a-b a-i aaa aab aai aam aao aas aau aax ab- aba abb abi abm abo abs abu abx ai- aia aib aii aim aio ais aiu aix ama amb ami amm amo ams amu amx aoa aob aoi aom aoo aos aou aox as- asa asb asi asm aso ass asu asx au- aua aub aui aum auo aus aux ax- axa axi axm axo axs axx b-u baa bab bai bam bao bas bau bax bba bbb bbi bbm bbo bbs bbu bbx bi- bia bib bii bim bio bis biu bix bma bmb bmi bmm bmo bms bmu bmx boa bob boi bom boo bos bou box bsa bsb bsi bsm bso bss bsu bsx bua bub bui bum buo bus buu bux bxb bxi bxm bxo bxx ia- iaa iab iai iam iao ias iau iba ibb ibi ibm ibo ibs ibu ibx iia iib iii iim iio iis iiu iix im- ima imb imi imm imo ims imu imx io- ioa iob ioi iom ioo ios iou is- isa isb isi ism iso iss isu iu- iua iub iui ium ius ixi m-o maa mab mai mam mao mas mau max mba mbb mbi mbm mbo mbs mbu mbx mi- mia mib mii mim mio mis miu mix mma mmb mmi mmm mmo mms mmu mmx moa mob moi mom moo mos mou mox msa msb msi msm mso mss msu msx mua mub mui mum mus muu mux mxa mxi mxs mxu o-i oaa oab oai oam oao oas oau oax ob- oba obb obi obm obo obs obu obx oia oib oii oim oio ois oiu om- oma omb omi omm omo oms omu omx oo- ooa oob ooi oom ooo oos oox os- osa osb osi osm oso oss osu osx ou- oua oui oum ouo ous ox- oxa oxb oxi oxo oxx saa sab sai sam sao sas sau sax sba sbb sbi sbm sbo sbs sbu sbx sia sib sii sim sio sis siu six sma smb smi smm smo sms smu smx soa sob soi som soo sos sou sox ss- ssa ssb ssi ssm sso sss ssu ssx sua sub sui sum suo sus suu sux sxi sxm sxs sxu ua- uaa uab uai uam uao uas uau uba ubb ubi ubo ubs ubu ubx uia uib uii uim uio uis uiu um- uma umb umi umm umo ums umu uoa uob uom uoo uos uox usa usb usi usm uso uss usu usx uua uum uus uuu uxb uxo uxu xaa xam xas xau xbx xia xii xio xis xiu xix xma xmi xmm xmo xms xmu xmx xoa xoi xom xoo xos xox xsa xsb xsi xsm xss xui xus xxi xxo xxx