-ic bbb bbc bbg bbi bbl bbn bbr bbs bcb bcc bcg bci bcl bcn bcr bcs bgb bgc bgg bgi bgl bgn bgr bgs bi- bib bic big bii bil bin bir bis blb blc blg bli bll bln blr bls bnb bnc bng bni bnl bnn bnr bns brb brg bri brl brn brr brs bsb bsc bsg bsi bsl bsn bsr bss c-- cbb cbc cbg cbi cbl cbn cbr cbs ccb ccc ccg cci ccl ccn ccr ccs cgb cgc cgg cgi cgl cgn cgr cgs ci- cib cic cig cii cil cin cir cis cl- clb clc clg cli cll cln clr cls cn- cnb cnc cng cni cnl cnn cnr cns crb crc crg cri crl crn crr crs csb csc csg csi csl csn csr css gbc gbg gbi gbl gbn gbr gbs gcb gcc gcg gci gcl gcn gcr gcs ggb ggc ggg ggi ggn ggr ggs gib gic gig gii gil gin gir gis glb glc glg gli gll gln glr gls gnb gnc gni gnl gnn gnr gns grb grc grg gri grl grn grr grs gsb gsc gsg gsi gsl gsn gsr gss ibb ibc ibg ibi ibl ibn ibr ibs icb icc icg ici icl icn icr ics igb igc igg igi igl ign igr igs iib iic iii iil iin iir iis il- ilb ilc ilg ili ill iln ilr ils in- inb inc ing ini inl inn inr ins ir- irb irc irg iri irl irn irr irs is- isb isc isg isi isl isn isr iss lbb lbc lbg lbi lbl lbr lbs lcb lcc lcg lci lcl lcn lcr lcs lgb lgc lgg lgi lgl lgn lgr lgs lib lic lig lii lil lin lir lis llb llc llg lli lll lln llr lls lnb lnc lng lni lnl lnn lnr lns lrb lrc lrg lri lrn lrr lrs lsb lsc lsg lsi lsl lsn lsr lss n-i nbb nbc nbg nbi nbl nbn nbr nbs ncb ncc ncg nci ncl ncn ncr ncs ngb ngc ngg ngi ngl ngn ngs nib nic nig nii nil nin nir nis nlb nlc nlg nli nll nln nlr nls nnb nnc nng nni nnl nnn nns nrb nrc nrg nri nrl nrn nrr nrs nsb nsc nsg nsi nsl nsn nsr nss rbb rbc rbg rbi rbl rbn rbr rbs rcb rcc rcg rci rcl rcn rcr rcs rgb rgc rgg rgi rgn rgr rgs rib ric rig rii ril rin rir ris rlc rlg rli rll rln rlr rls rnb rnc rng rni rnn rnr rns rrb rrc rrg rri rrl rrn rrr rrs rsb rsc rsg rsi rsl rsn rsr rss sbb sbc sbg sbi sbl sbn sbr sbs scb scc scg sci scl scn scr scs sgb sgc sgg sgi sgl sgn sgr sgs sib sic sig sii sil sin sir sis slb slc slg sli sll sln slr sls snb snc sng sni snl snn snr sns sr- srb src srg sri srl srn srr srs ss- ssb ssc ssg ssi ssl ssn ssr sss