-ic bbb bbc bbd bbi bbl bbn bbr bcb bcc bcd bci bcl bcn bcr bdb bdc bdd bdi bdl bdr bi- bib bic bid bii bil bin bir blb blc bld bli bll bln blr bnb bnc bnd bni bnl bnn bnr brb brd bri brl brn brr c-- cbb cbc cbd cbi cbl cbn cbr ccb ccc ccd cci ccl ccn ccr cdb cdc cdd cdi cdl cdn cdr ci- cib cic cid cii cil cin cir cl- clb clc cld cli cll cln clr cn- cnb cnc cnd cni cnl cnn cnr crb crc crd cri crl crn crr dbb dbc dbd dbi dbl dbn dbr dcb dcc dcd dci dcl dcn dcr ddb ddc ddd ddi ddl ddn ddr di- dib dic did dii dil din dir dl- dlb dlc dld dli dll dlr dnb dnc dnd dni dnl dnn dnr drb drc drd dri drl drn drr i-d ibb ibc ibd ibi ibl ibn ibr icb icc icd ici icl icn icr idb idc idd idi idl idn idr iib iic iid iii iil iin iir il- ilb ilc ild ili ill iln ilr in- inb inc ind ini inl inn inr ir- irb irc ird iri irl irn irr lbb lbc lbd lbi lbl lbr lcb lcc lcd lci lcl lcn lcr ldb ldc ldd ldi ldl ldn ldr lib lic lid lii lil lin lir llb llc lld lli lll lln llr lnb lnc lnd lni lnl lnn lnr lrb lrc lrd lri lrn lrr n-i nbb nbc nbd nbi nbl nbn nbr ncb ncc ncd nci ncl ncn ncr ndb ndc ndd ndi ndl ndn ndr nib nic nid nii nil nin nir nlb nlc nld nli nll nln nlr nnb nnc nni nnl nnn nrb nrc nrd nri nrl nrn nrr rbb rbc rbd rbi rbl rbn rbr rcb rcc rcd rci rcl rcn rcr rdb rdc rdd rdi rdl rdn rdr rib ric rid rii ril rin rir rlc rld rli rll rln rlr rnb rnc rnd rni rnn rnr rrb rrc rrd rri rrl rrn rrr