-er -ey a-a a-b a-c a-t aaa aab aac aae aak aar aat aay ab- aba abb abc abe abk abr abt aby ac- aca acb acc ace ack acr act acy aea aeb aec aee aek aer aet aey aka akb akc ake akk akr ar- ara arb arc are ark arr art ary at- ata atb atc ate atr att ay- aya ayc aye ayk ayr ayt baa bab bac bae bak bar bat bay bba bbb bbc bbe bbk bbr bbt bby bca bcb bcc bce bck bcr bct bcy be- bea beb bec bee bek ber bet bey bka bkb bkc bke bkk bkr bkt bra brb bre brk brr brt bry bta btb btc bte btk btr btt bty by- bya byc bye byk byr byt c-- caa cab cac cae cak car cat cay cba cbb cbc cbe cbk cbr cbt cby cca ccb ccc cce cck ccr cct ce- cea ceb cec cee cek cer cet cey cka ckb ckc ckt cky cra crb crc cre crk crr crt cry cta ctb ctc cte ctk ctr ctt cty cya cyb cyc cye cyk cyr cyt eaa eab eac eae eak ear eat eba ebb ebc ebe ebk ebr ebt eby ec- eca ecb ecc ece eck ecr ect eea eeb eec eee eek eer eet eey eka ekb ekc eke ekr ekt eky era erb erc ere erk err ert ery eta etb etc ete etk etr ett ety eya eyc eye eyr eyt k-t ka- kaa kab kac kae kak kar kat kay kba kbb kbc kbe kbk kbr kca kcb kcc kce kck kcr kct ke- kea keb kec kee kek ker ket key kkb kkc kke kkk kkr kkt kky kra krc krk krr krt kry kta ktb ktc kte ktk ktr ktt kya kyc kye kyr kyt ra- raa rab rac rae rak rar rat ray rba rbb rbc rbe rbk rbr rbt rca rcb rcc rce rcr rct re- rea reb rec ree rek rer ret rey rkb rkc rke rkk rkt rky rra rrb rrc rrk rrr rrt rta rtb rtc rte rtk rtr rtt rty ry- rya ryc rye ryk ryr ryy taa tab tac tae tak tar tat tay tba tbb tbc tbe tbk tbr tbt tca tcb tcc tce tck tcr tct te- tea teb tec tee tek ter tet tey tka tkb tkc tke tkk tkr tkt tky tra trb trc tre trk trr trt try tta ttb ttc tte ttk ttr ttt tty tya tyc tye tyr tyt yaa yab yac yae yak yar yat yay ybc ybe ybr yby yca ycc yce ycy yea yeb yec yee yek yer yet yey yka ykk yra yrc yre yrt yta ytc yte ytk ytr ytt yyb yyc yye yyt yyy