-ic bbb bbc bbg bbi bbk bbl bbr bcb bcc bcg bci bck bcl bcr bgb bgc bgg bgi bgk bgl bgr bi- bib bic big bii bik bil bir bkb bkc bkg bkk bkl bkr blb blc blg bli blk bll blr brb brg bri brk brl brr c-- cbb cbc cbg cbi cbk cbl cbr ccb ccc ccg cci cck ccl ccr cgb cgc cgg cgi cgl cgr ci- cib cic cig cii cik cil cir ckb ckc cki cl- clb clc clg cli clk cll clr crb crc crg cri crk crl crr gbc gbg gbi gbk gbl gbr gcb gcc gcg gci gck gcl gcr ggb ggc ggg ggi ggr gib gic gig gii gik gil gir gkb glb glc glg gli glk gll glr grb grc grg gri grk grl grr ibb ibc ibg ibi ibk ibl ibr icb icc icg ici ick icl icr igb igc igg igi igk igl igr iib iic iii iil iir ikb ikc iki ikk ikl ikr il- ilb ilc ilg ili ilk ill ilr ir- irb irc irg iri irk irl irr kbb kbc kbi kbk kbl kbr kcb kcc kcg kci kck kcl kcr kgb kgc kgi kgl kib kic kig kii kik kil kir kkb kkc kki kkk kkl kkr kl- klb klc klg kli klr krc krg kri krk krl krr lbb lbc lbg lbi lbk lbl lbr lcb lcc lcg lci lck lcl lcr lgb lgc lgg lgi lgk lgl lgr lib lic lig lii lik lil lir lkb lkg lkl lkr llb llc llg lli llk lll llr lrb lrc lrg lri lrk lrr rbb rbc rbg rbi rbk rbl rbr rcb rcc rcg rci rcl rcr rgb rgc rgg rgi rgk rgr rib ric rig rii rik ril rir rkb rkc rkg rkk rlc rlg rli rll rlr rrb rrc rrg rri rrk rrl rrr