a-a a-b a-i a-t aaa aab aai aak aas aat aau ab- aba abb abi abk abs abt abu ai- aia aib aii aik ais ait aiu aka akb aki akk aks aku as- asa asb asi ask ass ast asu at- ata atb ati ats att atu au- aua aub aui auk aus aut b-u baa bab bai bak bas bat bau bba bbb bbi bbk bbs bbt bbu bi- bia bib bii bik bis bit biu bka bkb bkk bks bkt bsa bsb bsi bsk bss bst bsu bta btb bti btk bts btt btu bua bub bui buk bus but buu ia- iaa iab iai ias iat iau iba ibb ibi ibk ibs ibt ibu iia iib iii iis iit iiu ika ikb iki ikk iks ikt iku is- isa isb isi isk iss ist isu ita itb iti itk its itt itu iu- iua iub iui ius iut k-t ka- kaa kab kai kak kas kat kau kba kbb kbi kbk kbs kbu kia kib kii kik kis kit kiu kkb kki kkk kks kkt kku ksa ksb ksi ksk kss kst ksu kta ktb ktk kts ktt ktu kub kui kuk kus kut kuu saa sab sai sak sas sat sau sba sbb sbi sbk sbs sbt sbu sia sib sii sik sis sit siu sk- ska skb ski skk sks skt sku ss- ssa ssb ssi ssk sss sst ssu sta stb sti stk sts stt stu sua sub sui suk sus sut suu taa tab tai tak tas tat tau tba tbb tbi tbk tbs tbt tbu tia tib tii tik tis tit tiu tka tkb tkk tks tkt tsa tsb tsi tsk tss tst tsu tta ttb tti ttk tts ttt ttu tua tub tui tuk tus tut tuu ua- uaa uab uai uak uas uat uau uba ubb ubi ubk ubs ubt ubu uia uib uii uis uit uiu uka ukb uki ukk uku usa usb usi usk uss ust usu uta utb uti utk uts utt utu uua uus uut uuu