-ly b-u bbb bbc bbk bbl bbu bby bcb bcc bck bcl bcu bcy bkb bkc bkk bkl blb blc blk bll blu bly bub buc buk bul buu buy by- byc byk byl byu c-- cbb cbc cbk cbl cbu cby ccb ccc cck ccl ccu ckb ckc cky cl- clb clc clk cll clu cly cub cuc cuk cul cuu cuy cyb cyc cyk cyl kbb kbc kbk kbl kbu kcb kcc kck kcl kcu kkb kkc kkk kkl kku kky kl- klb klc klu kly kub kuc kuk kul kuu kuy kyc kyl kyu lbb lbc lbk lbl lbu lcb lcc lck lcl lcu lcy lkb lkl lky llb llc llk lll llu lly lub luc luk lul luu luy lyc lyk lyl ubb ubc ubk ubl ubu uby ucb ucc uck ucl ucu ukb ukc ukk ukl uku ulb ulc ulk ull ulu uly uuc uuu uyc uyu ybc ybl yby ycc ycl ycu ycy ykk ylc ylk yll yly yuk yul yuu yuy yyb yyc yyu yyy