a-a a-b a-t aaa aab aak aan aas aat aau ab- aba abb abk abn abs abt abu aka akb akk akn aks aku an- ana anb ank ann ans ant anu as- asa asb ask asn ass ast asu at- ata atb atn ats att atu au- aua aub auk aun aus aut b-u baa bab bak ban bas bat bau bba bbb bbk bbn bbs bbt bbu bka bkb bkk bkn bks bkt bna bnb bnk bnn bns bnt bnu bsa bsb bsk bsn bss bst bsu bta btb btk btn bts btt btu bua bub buk bun bus but buu k-t ka- kaa kab kak kan kas kat kau kba kbb kbk kbn kbs kbu kkb kkk kkn kks kkt kku kn- kna knk knn knt knu ksa ksb ksk ksn kss kst ksu kta ktb ktk ktn kts ktt ktu kub kuk kun kus kut kuu naa nab nak nan nas nat nau nba nbb nbk nbn nbs nbt nbu nka nkk nkn nks nkt nku nna nnb nnk nnn nns nnt nnu nsa nsb nsk nsn nss nst nsu nta ntb ntk ntn nts ntt ntu nua nub nuk nun nus nut nuu saa sab sak san sas sat sau sba sbb sbk sbn sbs sbt sbu sk- ska skb skk sks skt sku sna snb snk snn sns snt snu ss- ssa ssb ssk ssn sss sst ssu sta stb stk stn sts stt stu sua sub suk sun sus sut suu taa tab tak tan tas tat tau tba tbb tbk tbn tbs tbt tbu tka tkb tkk tks tkt tna tnb tnk tnn tns tnt tsa tsb tsk tsn tss tst tsu tta ttb ttk ttn tts ttt ttu tua tub tuk tun tus tut tuu ua- uaa uab uak uan uas uat uau uba ubb ubk ubn ubs ubt ubu uka ukb ukk ukn uku un- una unb unk unn uns unt unu usa usb usk usn uss ust usu uta utb utk utn uts utt utu uua uun uus uut uuu