-er -ey a-a a-b a-c aaa aab aac aae aaj aak aar aay ab- aba abb abc abe abj abk abr aby ac- aca acb acc ace acj ack acr acy aea aeb aec aee aej aek aer aey aja ajb ajc aje ajj ajk ajr ajy aka akb akc ake akj akk akr ar- ara arb arc are arj ark arr ary ay- aya ayc aye ayk ayr baa bab bac bae baj bak bar bay bba bbb bbc bbe bbk bbr bby bca bcb bcc bce bcj bck bcr bcy be- bea beb bec bee bek ber bey bja bjc bjj bjk bjr bka bkb bkc bke bkk bkr bra brb bre brj brk brr bry by- bya byc bye byj byk byr c-- c-j caa cab cac cae caj cak car cay cba cbb cbc cbe cbj cbk cbr cby cca ccb ccc cce ccj cck ccr ce- cea ceb cec cee cej cek cer cey cja cjb cjc cjk cjr cka ckb ckc cky cra crb crc cre crj crk crr cry cya cyb cyc cye cyk cyr eaa eab eac eae eaj eak ear eba ebb ebc ebe ebj ebk ebr eby ec- eca ecb ecc ece ecj eck ecr eea eeb eec eee eek eer eey eja ejc eka ekb ekc eke ekr eky era erb erc ere erk err ery eya eyc eye eyr jaa jab jac jae jaj jak jar jay jba jbc jbj jbk jbr jca jcb jcc jce jck jcr jea jeb jec jee jej jek jer jey jja jjb jjc jjj jjk jjr jjy jka jkb jkk jkr jra jrb jrc jrk jrr jyj jyr ka- kaa kab kac kae kaj kak kar kay kba kbb kbc kbe kbk kbr kca kcb kcc kce kck kcr ke- kea keb kec kee kek ker key kjb kjc kje kjr kkb kkc kke kkk kkr kky kra krc krk krr kry kya kyc kye kyr ra- raa rab rac rae raj rak rar ray rba rbb rbc rbe rbk rbr rca rcb rcc rce rcj rcr re- rea reb rec ree rek rer rey rja rjc rjk rjr rkb rkc rke rkk rky rra rrb rrc rrk rrr ry- rya ryc rye ryk ryr ryy yaa yab yac yae yak yar yay ybc ybe ybr yby yca ycc yce ycy yea yeb yec yee yek yer yey yka ykk yra yrc yre yyb yyc yye yyy