bbb bbi bbl bbm bbr bi- bib bii bil bim bir blb bli bll blm blr bmb bmi bml bmm bmr brb bri brl brm brr ibb ibi ibl ibm ibr iib iii iil iim iir il- ilb ili ill ilm ilr im- imb imi iml imm ir- irb iri irl irm irr lbb lbi lbl lbm lbr lib lii lil lim lir llb lli lll llm llr lmb lmi lml lmm lmr lrb lri lrm lrr m-r mbb mbi mbl mbm mbr mi- mib mii mil mim mir mlb mli mll mlm mlr mmb mmi mml mmm mmr mrb mri mrl mrm mrr rbb rbi rbl rbm rbr rib rii ril rim rir rli rll rlm rlr rmb rmi rml rmm rmr rrb rri rrl rrm rrr