-er -ic c-- ccc ccd cce cci ccr cct ccv cdc cdd cde cdi cdr cdt cdv ce- cec ced cee cei cer cet cev ci- cic cid cie cii cir cit civ crc crd cre cri crr crt crv ctc ctd cte cti ctr ctt ctv cvc cvd cve cvi cvr cvt cvv dcc dcd dce dci dcr dct dcv ddc ddd dde ddi ddr ddt de- dec ded dee dei der det dev di- dic did die dii dir dit div drc drd dre dri drr drt drv dtc dtd dte dti dtr dtt dtv dvc dvd dve dvi dvr dvt ec- ecc ecd ece eci ecr ect ecv ed- edc edd ede edi edr edt eec eed eee eer eet eev eic eid eie eii eir eit eiv erc erd ere eri err ert erv etc etd ete eti etr ett etv evc evd eve evi evr evt evv i-d i-v icc icd ice ici icr ict icv idc idd ide idi idr idt idv ie- iec ied iee iei ier iet iev iic iid iie iii iir iit ir- irc ird ire iri irr irt irv itc itd ite iti itt itv ivc ivd ive ivi ivr ivt ivv rcc rcd rce rci rcr rct rcv rdc rdd rde rdi rdr rdt rdv re- rec red ree rei rer ret rev ric rid rie rii rir rit riv rrc rrd rri rrr rrt rtc rtd rte rti rtr rtt rtv rvc rvd rve rvi rvr rvt rvv tcc tcd tce tci tcr tct tcv tdc tdd tde tdi tdr tdt tdv te- tec ted tee tei ter tet tev tic tid tie tii tir tit tiv trc trd tre tri trr trt trv ttc ttd tte tti ttr ttt ttv tvc tvd tve tvi tvr tvt v-e vcc vcd vce vci vcr vct vdc vdd vde vdi vdr vdt vdv vec ved vee vei ver vet vi- vic vid vie vii vir vit viv vrc vrd vre vri vrr vrt vtc vte vti vtr vtt vtv vvc vvi vvr vvt vvv