-er -ic bbb bbc bbd bbe bbg bbi bbl bbr bcb bcc bcd bce bcg bci bcl bcr bdb bdc bdd bde bdg bdi bdl bdr be- beb bec bed bee beg bei bel ber bgb bgc bgd bge bgg bgi bgl bgr bi- bib bic bid bie big bii bil bir blb blc bld ble blg bli bll blr brb brd bre brg bri brl brr c-- cbb cbc cbd cbe cbg cbi cbl cbr ccb ccc ccd cce ccg cci ccl ccr cdb cdc cdd cde cdg cdi cdl cdr ce- ceb cec ced cee ceg cei cel cer cgb cgc cgd cge cgg cgi cgl cgr ci- cib cic cid cie cig cii cil cir cl- clb clc cld cle clg cli cll clr crb crc crd cre crg cri crl crr dbb dbc dbd dbe dbg dbi dbl dbr dcb dcc dcd dce dcg dci dcl dcr ddb ddc ddd dde ddg ddi ddl ddr de- deb dec ded dee deg dei del der dgc dgd dge dgg dgi dgl dgr di- dib dic did die dig dii dil dir dl- dlb dlc dld dle dlg dli dll dlr drb drc drd dre drg dri drl drr ebb ebc ebd ebe ebg ebi ebl ebr ec- ecb ecc ecd ece ecg eci ecl ecr ed- edb edc edd ede edg edi edl edr eeb eec eed eee eeg eel eer egb egc egd ege egg egi egl egr eib eic eid eie eig eii eil eir elb elc eld ele elg eli ell elr erb erc erd ere erg eri erl err g-d gbc gbd gbe gbg gbi gbl gbr gcb gcc gcd gce gcg gci gcl gcr gdb gdc gdd gde gdi gdl gdr ge- geb gec ged gee geg gei gel ger ggb ggc ggd ggg ggi ggr gib gic gid gie gig gii gil gir glb glc gld gle glg gli gll glr grb grc grd gre grg gri grl grr i-d ibb ibc ibd ibe ibg ibi ibl ibr icb icc icd ice icg ici icl icr idb idc idd ide idg idi idl idr ie- iec ied iee ieg iei iel ier igb igc igd ige igg igi igl igr iib iic iid iie iii iil iir il- ilb ilc ild ile ilg ili ill ilr ir- irb irc ird ire irg iri irl irr lbb lbc lbd lbe lbg lbi lbl lbr lcb lcc lcd lce lcg lci lcl lcr ldb ldc ldd lde ldg ldi ldl ldr leb lec led lee leg lei lel ler lgb lgc lgd lge lgg lgi lgl lgr lib lic lid lie lig lii lil lir llb llc lld lle llg lli lll llr lrb lrc lrd lrg lri lrr rbb rbc rbd rbe rbg rbi rbl rbr rcb rcc rcd rce rcg rci rcl rcr rdb rdc rdd rde rdg rdi rdl rdr re- reb rec red ree reg rei rel rer rgb rgc rgd rge rgg rgi rgr rib ric rid rie rig rii ril rir rlc rld rle rlg rli rll rlr rrb rrc rrd rrg rri rrl rrr