b-u bbb bbo bbr bbu bbx bby bjj bjr bju bob boj boo bor bou box boy brb brj bro brr bru brx bry bub buj buo bur buu bux buy bxb bxj bxo bxx by- byj byo byr byu jbj jbo jbr jbu jjb jjj jjr jju jjy job joj joo jor jou joy jrb jro jrr jub juo jur juy jyj jyr ob- obb obj obo obr obu obx oby ojb ojo oju ojy oo- oob ooo oor oox or- orb oro orr oru orx ory ou- ouo our ox- oxb oxo oxx oxy oyo rbb rbo rbr rbu rbx rjr rob roj roo ror rou rox roy rrb rrr rru rub ruo rur ruu rux ruy rxr ry- ryo ryr ryu ryy ubb ubo ubr ubu ubx uby ujo uob uoj uoo uor uox ur- urb uro urr uru urx ury uur uuu uxb uxo uxr uxu uyo uyu xbr xbx xjo xoo xor xox xrx xry xxo xxx xxy xyr xyy ybr yby yob yoj yoo yor you yox yoy yro yru yuj yuo yur yuu yux yuy yxy yyb yyu yyy