a-a a-b aaa aab aah aaj aao aar aau ab- aba abb abh abj abo abr abu aha ahb ahh ahj aho ahr ahu aja ajb ajh ajj ajo ajr aju aoa aob aoh aoj aoo aor aou ar- ara arb arh arj aro arr aru au- aua aub auh auj auo aur b-u baa bab bah baj bao bar bau bba bbb bbh bbo bbr bbu bha bhb bhh bhj bho bhr bhu bja bjj bjr bju boa bob boh boj boo bor bou bra brb brh brj bro brr bru bua bub buh buj buo bur buu haa hab hah haj hao har hau hba hbb hbh hbj hbo hbr hbu hha hhb hhh hhj hho hhr hhu hja hjo hjr hoa hob hoh hoo hor hou hr- hra hrb hrh hrj hro hrr hru hua hub huh huj huo hur huu jaa jab jah jaj jao jar jau jba jbj jbo jbr jbu jha jhj jho jhr jhu jja jjb jjj jjr jju joa job joh joj joo jor jou jra jrb jro jrr jub juh juo jur oaa oab oah oaj oao oar oau ob- oba obb obh obj obo obr obu oha ohh oho ohr ohu oja ojb ojo oju oo- ooa oob ooh ooo oor or- ora orb orh oro orr oru ou- oua ouh ouo our ra- raa rab rah raj rao rar rau rba rbb rbh rbo rbr rbu rh- rha rhb rhh rho rhr rhu rja rjr roa rob roh roj roo ror rou rra rrb rrh rrr rru rua rub ruh ruo rur ruu ua- uaa uab uah uaj uao uar uau uba ubb ubh ubo ubr ubu uha uhb uhh uhj uho uhr uhu ujo uoa uob uoj uoo uor ur- ura urb uro urr uru uua uur uuu