a-a a-b a-t aaa aab aae aak aas aat aau ab- aba abb abe abk abs abt abu aea aeb aee aek aes aet aeu aka akb ake akk aks aku as- asa asb ase ask ass ast asu at- ata atb ate ats att atu au- aua aub aue auk aus aut b-u baa bab bae bak bas bat bau bba bbb bbe bbk bbs bbt bbu be- bea beb bee bek bes bet beu bka bkb bke bkk bks bkt bsa bsb bse bsk bss bst bsu bta btb bte btk bts btt btu bua bub bue buk bus but buu eaa eab eae eak eas eat eau eba ebb ebe ebk ebs ebt ebu eea eeb eee eek ees eet eka ekb eke eks ekt eku es- esa esb ese esk ess est esu eta etb ete etk ets ett etu eu- eua eub eue eus eut k-t ka- kaa kab kae kak kas kat kau kba kbb kbe kbk kbs kbu ke- kea keb kee kek kes ket kkb kke kkk kks kkt kku ksa ksb kse ksk kss kst ksu kta ktb kte ktk kts ktt ktu kub kue kuk kus kut kuu saa sab sae sak sas sat sau sba sbb sbe sbk sbs sbt sbu se- sea seb see sek ses set seu sk- ska skb ske skk sks skt sku ss- ssa ssb sse ssk sss sst ssu sta stb ste stk sts stt stu sua sub sue suk sus sut suu taa tab tae tak tas tat tau tba tbb tbe tbk tbs tbt tbu te- tea teb tee tek tes tet teu tka tkb tke tkk tks tkt tsa tsb tse tsk tss tst tsu tta ttb tte ttk tts ttt ttu tua tub tue tuk tus tut tuu ua- uaa uab uae uak uas uat uau uba ubb ube ubk ubs ubt ubu uea ueb uee ues uet uka ukb uke ukk uku usa usb use usk uss ust usu uta utb ute utk uts utt utu uua uue uus uut uuu