-er -ic bbb bbc bbe bbh bbi bbl bbr bcb bcc bce bch bci bcl bcr be- beb bec bee beh bei bel ber bhb bhc bhe bhh bhi bhl bhr bi- bib bic bie bih bii bil bir blb blc ble blh bli bll blr brb bre brh bri brl brr c-- cbb cbc cbe cbh cbi cbl cbr ccb ccc cce cch cci ccl ccr ce- ceb cec cee ceh cei cel cer ch- chb chc che chh chi chl chr ci- cib cic cie cih cii cil cir cl- clb clc cle clh cli cll clr crb crc cre crh cri crl crr ebb ebc ebe ebh ebi ebl ebr ec- ecb ecc ece ech eci ecl ecr eeb eec eee eel eer ehb ehc ehe ehh ehi ehl ehr eib eic eie eii eil eir elb elc ele elh eli ell elr erb erc ere erh eri erl err h-i hbb hbc hbe hbh hbi hbl hbr hcb hcc hce hch hci hcl hcr he- heb hec hee heh hei hel her hhb hhc hhe hhh hhi hhl hhr hib hic hie hih hii hil hir hlb hlc hle hlh hli hll hlr hr- hrb hrc hre hrh hri hrl hrr ibb ibc ibe ibh ibi ibl ibr icb icc ice ich ici icl icr ie- iec iee iei iel ier ihb ihc ihe ihh ihi ihl ihr iib iic iie iih iii iil iir il- ilb ilc ile ilh ili ill ilr ir- irb irc ire iri irl irr lbb lbc lbe lbh lbi lbl lbr lcb lcc lce lch lci lcl lcr leb lec lee leh lei lel ler lhb lhc lhh lhi lhr lib lic lie lih lii lil lir llb llc lle lli lll llr lrb lrc lrh lri lrr rbb rbc rbe rbh rbi rbl rbr rcb rcc rce rch rci rcl rcr re- reb rec ree reh rei rel rer rh- rhb rhc rhe rhh rhi rhl rhr rib ric rie rih rii ril rir rlc rle rlh rli rll rlr rrb rrc rrh rri rrl rrr