b-p bbb bbf bbk bbl bbp bfb bff bfl bfp bkb bkf bkk bkl bkp blb blf blk bll blp bpb bpf bpl bpp fbb fbf fbk fbl fbp fff ffk ffl ffp fkb fkf fkk fkl fkp flb flf fll flp fpb fpk fpl fpp kbb kbf kbk kbl kbp kff kkb kkk kkl kkp kl- klb klf kpf kpk kpl kpp l-p lbb lbf lbk lbl lbp lfb lff lfk lfl lfp lkb lkl lkp llb llf llk lll llp lpb lpf lpk lpl lpp p-p pbb pbf pbk pbl pbp pfb pff pfk pfl pfp pkb pkf pkl pkp plb plf plk pll plp ppb ppf ppk ppl ppp