a-a a-c a-z aaa aac aap aar aaz ac- aca acc acp acr acz ap- apa apc app apr ar- ara arc arp arr arz az- aza azp azz c-- caa cac cap car caz cca ccc ccp ccr ccz cpa cpc cpp cpr cpz cra crc crp crr crz cz- czc p-p paa pac pap par paz pca pcc pcp pcr ppa ppc ppp ppr ppz pra prc prp prr prz pzc pzp ra- raa rac rap rar raz rca rcc rcp rcr rpa rpc rpp rpr rpz rra rrc rrp rrr rza zaa zac zap zar zaz zpc zpp zpr zrp zzr zzz