a-ya aaaa aaab aaap aaar aaba aabb aabp aaby aapa aara aarp abaa abab abap abar abay abb- abba abbb abbr abby abpa abpp abpr abra abry abyy apap apar apay apba apbr appa appr appy apra arab arap arar aray arba arby arpa arpy arr- arra arrr arry ary- arya ayar ayay ayra ayry ayya baaa baar baba babb babr baby bapa bapp bar- bara barb barr bary baya bbay bbbb bbpr bpay brab bray brrr bry- brya byar paap paar paba papa papb papp papr papy par- para parp parr pary pay- paya payb payp payr pbar pbpa ppap ppar pppa pppp prar pray pyay pypy pyr- pyra pyry raab raba rabb raby rapa rapp rapy rara rarb rary raya rayr rbbb rbbr rrrr ryba rybp yaar yaba yapa yapp yara yarb yarp yarr yary yaya ybry yyyy