a-a aaa aag aan aao aar aax aay ag- aga agg agn ago agr agx agy an- ana ang ann ano anr anx any aoa aog aon aoo aor aox ar- ara arg arn aro arr arx ary ax- axa axn axo axr axx ay- aya ayn ayo ayr ayx gaa gag gan gao gar gay gga ggg ggn ggo ggr gna gnn gno gnr goa gog gon goo gor gox goy gra grg grn gro grr grx gry gxa gy- gya gyn gyo gyr naa nag nan nao nar nax nay nga ngg ngn ngo nna nng nnn nno no- noa nog non noo nor nox noy nra nrg nrn nro nrr nrx nry nya nyg nyn nyo nyx nyy oaa oag oan oao oar oax oga ogg ogn ogo ogx ogy on- ona ong onn ono onr onx ony oo- ooa oog oon ooo oor oox or- ora org orn oro orr orx ory ox- oxa oxn oxo oxx oxy oya oyo ra- raa rag ran rao rar rax ray rga rgg rgn rgo rgr rgx rna rng rnn rno rnr rny roa rog ron roo ror rox roy rra rrg rrn rrr rxr ry- rya ryg ryn ryo ryr ryy xaa xag xan xar xna xno xoa xog xon xoo xor xox xrx xry xxo xxx xxy xyr xyy yaa yag yan yao yar yax yay yga ygo yna yng ynn yny yog yon yoo yor yox yoy yra yrg yrn yro yxa yxy yyg yyy