-er -th a-a a-b a-c a-t aaa aab aac aae aah aak aar aat aau ab- aba abb abc abe abh abk abr abt abu ac- aca acb acc ace ach ack acr act acu aea aeb aec aee aeh aek aer aet aeu aha ahb ahc ahe ahh ahk ahr aht ahu aka akb akc ake akh akk akr aku ar- ara arb arc are arh ark arr art aru at- ata atb atc ate ath atr att atu au- aua aub auc aue auh auk aur aut b-u baa bab bac bae bah bak bar bat bau bba bbb bbc bbe bbh bbk bbr bbt bbu bca bcb bcc bce bch bck bcr bct bcu be- bea beb bec bee beh bek ber bet beu bha bhb bhc bhe bhh bhk bhr bht bhu bka bkb bkc bke bkk bkr bkt bra brb bre brh brk brr brt bru bta btb btc bte bth btk btr btt btu bua bub buc bue buh buk bur but buu c-- caa cab cac cae cah cak car cat cau cba cbb cbc cbe cbh cbk cbr cbt cbu cca ccb ccc cce cch cck ccr cct ccu ce- cea ceb cec cee ceh cek cer cet ceu ch- cha chb chc che chh chk chr cht chu cka ckb ckc ckh ckt cra crb crc cre crh crk crr crt cru cta ctb ctc cte cth ctk ctr ctt ctu cua cub cuc cue cuh cuk cur cut cuu eaa eab eac eae eah eak ear eat eau eba ebb ebc ebe ebh ebk ebr ebt ebu ec- eca ecb ecc ece ech eck ecr ect ecu eea eeb eec eee eek eer eet eha ehb ehc ehe ehh ehr eht ehu eka ekb ekc eke ekh ekr ekt eku era erb erc ere erh erk err ert eru eta etb etc ete eth etk etr ett etu eu- eua eub euc eue eur eut haa hab hac hae hah hak har hat hau hba hbb hbc hbe hbh hbk hbr hbt hbu hca hcb hcc hce hch hck hcr hct he- hea heb hec hee heh hek her het heu hha hhb hhc hhe hhh hhk hhr hht hhu hka hkb hkh hkk hkr hkt hku hr- hra hrb hrc hre hrh hrk hrr hrt hru hta htb htc hte hth htk htr htt hua hub huc hue huh huk hur hut huu k-t ka- kaa kab kac kae kah kak kar kat kau kba kbb kbc kbe kbh kbk kbr kbu kca kcb kcc kce kch kck kcr kct kcu ke- kea keb kec kee keh kek ker ket kha khe khh khk khr khu kkb kkc kke kkh kkk kkr kkt kku kra krc krk krr krt kru kta ktb ktc kte kth ktk ktr ktt ktu kub kuc kue kuh kuk kur kut kuu ra- raa rab rac rae rah rak rar rat rau rba rbb rbc rbe rbh rbk rbr rbt rbu rca rcb rcc rce rch rcr rct rcu re- rea reb rec ree reh rek rer ret reu rh- rha rhb rhc rhe rhh rhr rht rhu rkb rkc rke rkk rkt rku rra rrb rrc rrh rrk rrr rrt rru rta rtb rtc rte rtk rtr rtt rtu rua rub ruc rue ruh ruk rur rut ruu taa tab tac tae tah tak tar tat tau tba tbb tbc tbe tbh tbk tbr tbt tbu tca tcb tcc tce tch tck tcr tct tcu te- tea teb tec tee teh tek ter tet teu th- tha thb thc the thh thk thr tht thu tka tkb tkc tke tkk tkr tkt tra trb trc tre trh trk trr trt tru tta ttb ttc tte tth ttk ttr ttt ttu tua tub tuc tue tuh tuk tur tut tuu ua- uaa uab uac uae uah uak uar uat uau uba ubb ubc ube ubh ubk ubr ubt ubu uca ucb ucc uce uch uck ucr uct ucu uea ueb uec uee ueh uer uet uha uhb uhc uhe uhh uhr uht uhu uka ukb ukc uke ukk ukr uku ur- ura urb urc ure urk urr urt uru uta utb utc ute uth utk utr utt utu uua uuc uue uur uut uuu