a-a a-c a-t aaa aac aad aar aat aay ac- aca acc acd acr act acy ad- ada adc add adr adt ady ar- ara arc ard arr art ary at- ata atc atd atr att ay- aya ayc ayd ayr ayt c-- caa cac cad car cat cay cca ccc ccd ccr cct cda cdc cdd cdr cdt cdy cra crc crd crr crt cry cta ctc ctd ctr ctt cty cya cyc cyd cyr cyt daa dac dad dar dat day dca dcc dcd dcr dct dda ddc ddd ddr ddt ddy dra drc drd drr drt dry dta dtc dtd dtr dtt dty dy- dya dyc dyd dyr dyy ra- raa rac rad rar rat ray rca rcc rcd rcr rct rda rdc rdd rdr rdt rdy rra rrc rrd rrr rrt rta rtc rtd rtr rtt rty ry- rya ryc ryd ryr ryy taa tac tad tar tat tay tca tcc tcd tcr tct tda tdc tdd tdr tdt tdy tra trc trd trr trt try tta ttc ttd ttr ttt tty tya tyc tyd tyr tyt yaa yac yad yar yat yay yca ycc ycd ycy yda ydt ydy yra yrc yrt yta ytc ytd ytr ytt yyc yyt yyy