-th a-a a-b a-c a-t aaa aab aac aah aak aar aat aau ab- aba abb abc abh abk abr abt abu ac- aca acb acc ach ack acr act acu aha ahb ahc ahh ahk ahr aht ahu aka akb akc akh akk akr aku ar- ara arb arc arh ark arr art aru at- ata atb atc ath atr att atu au- aua aub auc auh auk aur aut b-u baa bab bac bah bak bar bat bau bba bbb bbc bbh bbk bbr bbt bbu bca bcb bcc bch bck bcr bct bcu bha bhb bhc bhh bhk bhr bht bhu bka bkb bkc bkk bkr bkt bra brb brh brk brr brt bru bta btb btc bth btk btr btt btu bua bub buc buh buk bur but buu c-- caa cab cac cah cak car cat cau cba cbb cbc cbh cbk cbr cbt cbu cca ccb ccc cch cck ccr cct ccu ch- cha chb chc chh chk chr cht chu cka ckb ckc ckh ckt cra crb crc crh crk crr crt cru cta ctb ctc cth ctk ctr ctt ctu cua cub cuc cuh cuk cur cut cuu haa hab hac hah hak har hat hau hba hbb hbc hbh hbk hbr hbt hbu hca hcb hcc hch hck hcr hct hha hhb hhc hhh hhk hhr hht hhu hka hkb hkh hkk hkr hkt hku hr- hra hrb hrc hrh hrk hrr hrt hru hta htb htc hth htk htr htt hua hub huc huh huk hur hut huu k-t ka- kaa kab kac kah kak kar kat kau kba kbb kbc kbh kbk kbr kbu kca kcb kcc kch kck kcr kct kcu kha khh khk khr khu kkb kkc kkh kkk kkr kkt kku kra krc krk krr krt kru kta ktb ktc kth ktk ktr ktt ktu kub kuc kuh kuk kur kut kuu ra- raa rab rac rah rak rar rat rau rba rbb rbc rbh rbk rbr rbt rbu rca rcb rcc rch rcr rct rcu rh- rha rhb rhc rhh rhr rht rhu rkb rkc rkk rkt rku rra rrb rrc rrh rrk rrr rrt rru rta rtb rtc rtk rtr rtt rtu rua rub ruc ruh ruk rur rut ruu taa tab tac tah tak tar tat tau tba tbb tbc tbh tbk tbr tbt tbu tca tcb tcc tch tck tcr tct tcu th- tha thb thc thh thk thr tht thu tka tkb tkc tkk tkr tkt tra trb trc trh trk trr trt tru tta ttb ttc tth ttk ttr ttt ttu tua tub tuc tuh tuk tur tut tuu ua- uaa uab uac uah uak uar uat uau uba ubb ubc ubh ubk ubr ubt ubu uca ucb ucc uch uck ucr uct ucu uha uhb uhc uhh uhr uht uhu uka ukb ukc ukk ukr uku ur- ura urb urc urk urr urt uru uta utb utc uth utk utr utt utu uua uuc uur uut uuu