a-a a-c a-z aaa aac aad aae aag aaz ac- aca acc acd ace acg acz ad- ada adc add ade adg adz aea aec aed aee aeg aez ag- aga agc agd age agg agz az- aza azd aze azg azz c-- caa cac cad cae cag caz cca ccc ccd cce ccg ccz cda cdc cdd cde cdg cdz ce- cea cec ced cee ceg cez cga cgc cgd cge cgg cz- czc czd cze daa dac dad dae dag daz dca dcc dcd dce dcg dda ddc ddd dde ddg ddz de- dea dec ded dee deg dez dga dgc dgd dge dgg dgz dza dzd dze eaa eac ead eae eag eaz ec- eca ecc ecd ece ecg ed- eda edc edd ede edg eea eec eed eee eeg ega egc egd ege egg eze ezz g-d gaa gac gad gae gag gaz gca gcc gcd gce gcg gda gdc gdd gde ge- gea gec ged gee geg gez gga ggc ggd ggg ggz gza z-g zaa zac zad zag zaz zce zea zec zed zee zez zgg zzz