a-a a-b a-q aaa aab aaq aar aau aay ab- aba abb abq abr abu aby aqa aqr ar- ara arb arq arr aru ary au- aua aub aur ay- aya ayr ayu b-u baa bab baq bar bau bay bba bbb bbq bbr bbu bby bra brb brq brr bru bry bua bub bur buu buy by- bya byq byr byu qaa qar qau qba qbq qqq qqu qra qrb qru qu- qua qur quy ra- raa rab raq rar rau ray rba rbb rbr rbu rra rrb rrq rrr rru rua rub rur ruu ruy ry- rya ryr ryu ryy ua- uaa uab uaq uar uau uay uba ubb ubr ubu uby ur- ura urb urr uru ury uua uur uuu uyu yaa yab yar yau yay ybr yby yqb yqr yra yru yua yur yuu yuy yyb yyu yyy