a-a a-t aaa aak aan aao aar aat aka akk akn ako akr an- ana ank ann ano anr ant aoa aok aon aoo aor aot ar- ara ark arn aro arr art at- ata atn ato atr att k-t ka- kaa kak kan kao kar kat kkk kkn kkr kkt kn- kna knk knn kno knr knt koa kok kon koo kor kot kra krk krn kro krr krt kta ktk ktn kto ktr ktt naa nak nan nao nar nat nka nkk nkn nko nkr nkt nna nnk nnn nno nnt no- noa nok non noo nor not nra nrk nrn nro nrr nrt nta ntk ntn nto ntr ntt oaa oak oan oao oar oat oka okk oko okr on- ona onk onn ono onr ont oo- ooa ook oon ooo oor oot or- ora ork orn oro orr ort ot- ota otk otn oto otr ott ra- raa rak ran rao rar rat rkk rko rkt rna rnn rno rnr rnt roa rok ron roo ror rot rra rrk rrn rrr rrt rta rtk rtn rto rtr rtt taa tak tan tao tar tat tka tkk tko tkr tkt tna tnk tnn tno tnr tnt to- toa tok ton too tor tot tra trk trn tro trr trt tta ttk ttn tto ttr ttt