-er -ic c-- ccc ccd cce cci ccp ccr cct cdc cdd cde cdi cdp cdr cdt ce- cec ced cee cei cep cer cet ci- cic cid cie cii cip cir cit cpc cpd cpe cpi cpp cpr cpt crc crd cre cri crp crr crt ctc ctd cte cti ctp ctr ctt dcc dcd dce dci dcp dcr dct ddc ddd dde ddi ddp ddr ddt de- dec ded dee dei dep der det di- dic did die dii dip dir dit dpc dpd dpe dpi dpp dpr dpt drc drd dre dri drp drr drt dtc dtd dte dti dtp dtr dtt ec- ecc ecd ece eci ecr ect ed- edc edd ede edi edp edr edt eec eed eee eep eer eet eic eid eie eii eip eir eit ep- epc epd epe epi epp epr ept erc erd ere eri erp err ert etc etd ete eti etp etr ett i-d icc icd ice ici icp icr ict idc idd ide idi idp idr idt ie- iec ied iee iei iep ier iet iic iid iie iii iip iir iit ipc ipd ipe ipi ipp ipr ipt ir- irc ird ire iri irp irr irt itc itd ite iti itp itt p-p pcc pcd pce pci pcp pcr pct pdc pdd pde pdi pdp pdr pdt pec ped pee pei pep per pet pic pid pie pii pip pir pit ppc ppd ppe ppi ppp ppr ppt prc prd pre pri prp prr prt pt- ptc ptd pte pti ptp ptr ptt rcc rcd rce rci rcp rcr rct rdc rdd rde rdi rdp rdr rdt re- rec red ree rei rep rer ret ric rid rie rii rip rir rit rpc rpd rpe rpi rpp rpr rpt rrc rrd rri rrp rrr rrt rtc rtd rte rti rtp rtr rtt tcc tcd tce tci tcp tcr tct tdc tdd tde tdi tdp tdr tdt te- tec ted tee tei tep ter tet tic tid tie tii tip tir tit tpc tpd tpe tpi tpp tpr tpt trc trd tre tri trp trr trt ttc ttd tte tti ttp ttr ttt