-er -ic b-p bbb bbc bbd bbe bbi bbp bbr bcb bcc bcd bce bci bcp bcr bdb bdc bdd bde bdi bdp bdr be- beb bec bed bee bei bep ber bi- bib bic bid bie bii bip bir bpb bpc bpd bpe bpi bpp bpr brb brd bre bri brp brr c-- cbb cbc cbd cbe cbi cbp cbr ccb ccc ccd cce cci ccp ccr cdb cdc cdd cde cdi cdp cdr ce- ceb cec ced cee cei cep cer ci- cib cic cid cie cii cip cir cpb cpc cpd cpe cpi cpp cpr crb crc crd cre cri crp crr dbb dbc dbd dbe dbi dbp dbr dcb dcc dcd dce dci dcp dcr ddb ddc ddd dde ddi ddp ddr de- deb dec ded dee dei dep der di- dib dic did die dii dip dir dpb dpc dpd dpe dpi dpp dpr drb drc drd dre dri drp drr ebb ebc ebd ebe ebi ebp ebr ec- ecb ecc ecd ece eci ecr ed- edb edc edd ede edi edp edr eeb eec eed eee eep eer eib eic eid eie eii eip eir ep- epb epc epd epe epi epp epr erb erc erd ere eri erp err i-d ibb ibc ibd ibe ibi ibp ibr icb icc icd ice ici icp icr idb idc idd ide idi idp idr ie- iec ied iee iei iep ier iib iic iid iie iii iip iir ipb ipc ipd ipe ipi ipp ipr ir- irb irc ird ire iri irp irr p-p pbb pbc pbd pbe pbi pbp pbr pcb pcc pcd pce pci pcp pcr pdb pdc pdd pde pdi pdp pdr peb pec ped pee pei pep per pib pic pid pie pii pip pir ppb ppc ppd ppe ppi ppp ppr prb prc prd pre pri prp prr rbb rbc rbd rbe rbi rbp rbr rcb rcc rcd rce rci rcp rcr rdb rdc rdd rde rdi rdp rdr re- reb rec red ree rei rep rer rib ric rid rie rii rip rir rpb rpc rpd rpe rpi rpp rpr rrb rrc rrd rri rrp rrr