a-a a-b aaa aab aag aan aao aap aay ab- aba abb abg abn abo abp aby ag- aga agb agg agn ago agp agy an- ana anb ang ann ano anp any aoa aob aog aon aoo aop ap- apa apb apg apn apo app apy ay- aya ayn ayo ayp b-p baa bab bag ban bao bap bay bba bbb bbg bbn bbo bbp bby bga bgb bgg bgn bgo bgp bna bnb bng bnn bno bnp boa bob bog bon boo bop boy bpa bpb bpg bpn bpo bpp bpy by- bya byg byn byo byp g-p gaa gab gag gan gao gap gay gba gbg gbn gbo gbp gby gga ggb ggg ggn ggo ggp gna gnb gnn gno gnp goa gob gog gon goo gop goy gpa gpb gpg gpn gpo gpp gy- gya gyb gyn gyo gyp naa nab nag nan nao nap nay nba nbb nbg nbn nbo nbp nga ngb ngg ngn ngo ngp nna nnb nng nnn nno nnp no- noa nob nog non noo nop noy npa npb npg npn npo npp nya nyg nyn nyo nyp nyy oaa oab oag oan oao oap ob- oba obb obg obn obo obp oby oga ogg ogn ogo ogp ogy on- ona onb ong onn ono onp ony oo- ooa oob oog oon ooo oop op- opa opb opg opn opo opp opy oya oyo p-p paa pab pag pan pao pap pay pba pbb pbg pbn pbo pbp pby pga pgb pgg pgn pgo pgp pgy pn- pna pnb png pnn pno pnp pny poa pob pog pon poo pop poy ppa ppb ppg ppn ppo ppp py- pya pyb pyg pyn pyo yaa yab yag yan yao yap yay ybg ybp yby yga ygo yna yng ynn ynp yny yob yog yon yoo yop yoy ypa ypg ypo yyb yyg yyy