-er -ic -ol c-- ccc ccd cce cci cck ccl cco ccr cct cdc cdd cde cdi cdk cdl cdo cdr cdt ce- cec ced cee cei cek cel ceo cer cet ci- cic cid cie cii cik cil cio cir cit ckc ckd cki cko ckt cl- clc cld cle cli clk cll clo clr clt co- coc cod coe coi cok col coo cor cot crc crd cre cri crk crl cro crr crt ctc ctd cte cti ctk ctl cto ctr ctt dcc dcd dce dci dck dcl dco dcr dct ddc ddd dde ddi ddk ddl ddo ddr ddt de- dec ded dee dei dek del deo der det di- dic did die dii dik dil dio dir dit dkc dke dki dkk dkl dko dkr dkt dl- dlc dld dle dli dlk dll dlo dlr dlt doc dod doe doi dok dol doo dor dot drc drd dre dri drk drl dro drr drt dtc dtd dte dti dtk dtl dto dtr dtt ec- ecc ecd ece eci eck ecl eco ecr ect ed- edc edd ede edi edk edl edo edr edt eec eed eee eek eel eeo eer eet eic eid eie eii eik eil eio eir eit ekc ekd eke eki ekl eko ekr ekt elc eld ele eli elk ell elo elr elt eo- eoc eod eoe eoi eok eol eoo eor eot erc erd ere eri erk erl ero err ert etc etd ete eti etk etl eto etr ett i-d icc icd ice ici ick icl ico icr ict idc idd ide idi idk idl ido idr idt ie- iec ied iee iei iek iel ier iet iic iid iie iii iil iio iir iit ikc ike iki ikk ikl iko ikr ikt il- ilc ild ile ili ilk ill ilo ilr ilt io- ioc iod ioe ioi iol ioo ior iot ir- irc ird ire iri irk irl iro irr irt itc itd ite iti itk itl ito itt k-t kcc kcd kce kci kck kcl kcr kct kdc kde kdk kdl kdo kdr kdt ke- kec ked kee kei kek kel keo ker ket kic kid kie kii kik kil kio kir kit kkc kke kki kkk kkl kkr kkt kl- klc kld kli klo klr klt koc kod koe koi kok kol koo kor kot krc krd kri krk krl kro krr krt ktc kte ktk ktl kto ktr ktt lcc lcd lce lci lck lcl lco lcr lct ldc ldd lde ldi ldk ldl ldo ldr ldt lec led lee lei lek lel leo ler let lic lid lie lii lik lil lio lir lit lkl lkr lkt llc lld lle lli llk lll llo llr llt loc lod loe loi lok lol loo lor lot lrc lrd lri lrk lro lrr lrt ltc ltd lte lti ltk ltl lto ltr ltt o-i oc- occ ocd oci ock ocl oco ocr oct odc odd ode odi odl odo odr odt oec oed oee oei oel oeo oer oet oic oid oie oii oik oil oio oir oit okc okd oke oki okk okl oko okr olc old ole oli olk oll olo olt oo- ooc ood ooi ook ool ooo oor oot or- orc ord ore ori ork orl oro orr ort ot- otc otd ote oti otk otl oto otr ott rcc rcd rce rci rcl rco rcr rct rdc rdd rde rdi rdl rdo rdr rdt re- rec red ree rei rek rel reo rer ret ric rid rie rii rik ril rio rir rit rkc rke rkk rko rkt rlc rld rle rli rll rlo rlr rlt roc rod roe roi rok rol roo ror rot rrc rrd rri rrk rrl rrr rrt rtc rtd rte rti rtk rtl rto rtr rtt tcc tcd tce tci tck tcl tco tcr tct tdc tdd tde tdi tdk tdl tdo tdr tdt te- tec ted tee tei tek tel teo ter tet tic tid tie tii tik til tio tir tit tkc tke tkk tkl tko tkr tkt tlc tld tle tli tlk tll tlo tlr tlt to- toc tod toe toi tok tol too tor tot trc trd tre tri trk trl tro trr trt ttc ttd tte tti ttk ttl tto ttr ttt