a-a a-t a-z aaa aan aao aar aat aaz an- ana ann ano anr ant anz aoa aon aoo aor aot ar- ara arn aro arr art arz at- ata atn ato atr att atz az- aza azn azo azt azz naa nan nao nar nat naz nna nnn nno nnt nnz no- noa non noo nor not noz nra nrn nro nrr nrt nrz nta ntn nto ntr ntt ntz nzo nzz oaa oan oao oar oat on- ona onn ono onr ont oo- ooa oon ooo oor oot or- ora orn oro orr ort orz ot- ota otn oto otr ott otz oza ozo ozt ozz ra- raa ran rao rar rat raz rna rnn rno rnr rnt rnz roa ron roo ror rot roz rra rrn rrr rrt rta rtn rto rtr rtt rtz rza rzo taa tan tao tar tat taz tna tnn tno tnr tnt tnz to- toa ton too tor tot toz tra trn tro trr trt trz tta ttn tto ttr ttt tza zaa zan zao zar zat zaz znn zno zo- zoa zon zoo zor zot zro zta ztr zzr zzt zzz