bbb bbc bbe bbl bbs bcb bcc bce bcl bcs bcz be- beb bec bee bel bes bez blb blc ble bll bls blz bsb bsc bse bsl bss bze bzs bzz c-- cbb cbc cbe cbl cbs cbz ccb ccc cce ccl ccs ccz ce- ceb cec cee cel ces cez cl- clb clc cle cll cls clz csb csc cse csl css csz cz- czc cze ebb ebc ebe ebl ebs ec- ecb ecc ece ecl ecs eeb eec eee eel ees elb elc ele ell els elz es- esb esc ese esl ess eze ezs ezz lbb lbc lbe lbl lbs lcb lcc lce lcl lcs leb lec lee lel les lez llb llc lle lll lls llz lsb lsc lse lsl lss lsz lzs sbb sbc sbe sbl sbs scb scc sce scl scs se- seb sec see sel ses sez slb slc sle sll sls ss- ssb ssc sse ssl sss ssz sze szl zbb zbc zbl zbs zce zcl zcs zeb zec zee zel zes zez zse zsl zsz zzs zzz