a-a a-t aaa aak aan aar aat aka akk akn akr an- ana ank ann anr ant ar- ara ark arn arr art at- ata atn atr att k-t ka- kaa kak kan kar kat kkk kkn kkr kkt kn- kna knk knn knr knt kra krk krn krr krt kta ktk ktn ktr ktt naa nak nan nar nat nka nkk nkn nkr nkt nna nnk nnn nnt nra nrk nrn nrr nrt nta ntk ntn ntr ntt ra- raa rak ran rar rat rkk rkt rna rnn rnr rnt rra rrk rrn rrr rrt rta rtk rtn rtr rtt taa tak tan tar tat tka tkk tkr tkt tna tnk tnn tnr tnt tra trk trn trr trt tta ttk ttn ttr ttt