-ey a-a a-b aaa aab aae aak aap aay ab- aba abb abe abk abp aby aea aeb aee aek aep aey aka akb ake akk akp ap- apa apb ape apk app apy ay- aya aye ayk ayp b-p baa bab bae bak bap bay bba bbb bbe bbk bbp bby be- bea beb bee bek bep bey bka bkb bke bkk bkp bpa bpb bpe bpp bpy by- bya bye byk byp eaa eab eae eak eap eba ebb ebe ebk ebp eby eea eeb eee eek eep eey eka ekb eke ekp eky ep- epa epb epe epp eya eye eyp ka- kaa kab kae kak kap kay kba kbb kbe kbk kbp ke- kea keb kee kek kep key kkb kke kkk kkp kky kpa kpe kpk kpp kya kye kyp p-p paa pab pae pak pap pay pba pbb pbe pbk pbp pby pea peb pee pek pep pey pka pkb pke pkp pky ppa ppb ppe ppk ppp py- pya pyb pye pyk yaa yab yae yak yap yay ybe ybp yby yea yeb yee yek yep yey yka ykk ypa yyb yye yyy