-ol bbb bbc bbe bbl bbo bbq bcb bcc bce bcl bco bcq be- beb bec bee bel beo beq blb blc ble bll blo blq bob boc boe bol boo boq bqc bqe c-- cbb cbc cbe cbl cbo cbq ccb ccc cce ccl cco ce- ceb cec cee cel ceo ceq cl- clb clc cle cll clo co- cob coc coe col coo coq cqb cqc cql cqo ebb ebc ebe ebl ebo ebq ec- ecb ecc ece ecl eco ecq eeb eec eee eel eeo elb elc ele ell elo eo- eob eoc eoe eol eoo eoq eqe eqq lbb lbc lbe lbl lbo lcb lcc lce lcl lco lcq leb lec lee lel leo leq llb llc lle lll llo llq lob loc loe lol loo loq ob- obb obc obe obl obo oc- ocb occ ocl oco oeb oec oee oel oeo olb olc ole oll olo oo- oob ooc ool ooo oqb oqo qbc qbe qbq qcc qcl qco qec qee qeo qoo qqq