-er -ic -up c-- ccc cce ccf cci ccp ccr cct ccu ccx ce- cec cee cef cei cep cer cet ceu cex cfc cfe cff cfi cfp cfr cft cfu cfx ci- cic cie cif cii cip cir cit ciu cix cpc cpe cpf cpi cpp cpr cpt cpu cpx crc cre crf cri crp crr crt cru crx ctc cte ctf cti ctp ctr ctt ctu ctx cuc cue cuf cui cup cur cut cuu cxc cxf cxi cxp cxr cxt cxx ec- ecc ece ecf eci ecr ect ecu ecx eec eee eef eep eer eet eex ef- efc efe eff efi efp efr eft efx eic eie eif eii eip eir eit eiu eix ep- epc epe epf epi epp epr ept epu epx erc ere erf eri erp err ert eru etc ete etf eti etp etr ett etu etx eu- euc eue euf eui eup eur eut eux ex- exc exe exi exp exr ext exu exx fcc fce fcf fci fcp fcr fct fcu fcx fec fee fef fei fep fer fet feu fex ffc ffe fff ffi ffp ffr fft ffu ffx fic fie fif fii fip fir fit fiu fix fpc fpe fpi fpp fpr fpt fpu fpx frc fre frf fri frp frr frt fru ftc fte ftf fti ftp ftr ftt ftu ftx fue fuf fui fup fur fut fuu fux fxe fxi fxp fxr fxt fxu fxx i-f icc ice icf ici icp icr ict icu ie- iec iee ief iei iep ier iet iex ifc ife iff ifi ifp ifr ift ifu ifx iic iie iif iii iip iir iit iiu iix ipc ipe ipf ipi ipp ipr ipt ipu ipx ir- irc ire irf iri irp irr irt iru irx itc ite itf iti itp itt itu itx iu- iuc iue iui iup iur iut ixc ixe ixi p-p pcc pce pcf pci pcp pcr pct pcu pcx pec pee pef pei pep per pet peu pex pfc pfe pff pfi pfp pfr pft pfu pfx pic pie pif pii pip pir pit piu pix ppc ppe ppf ppi ppp ppr ppt ppu ppx prc pre prf pri prp prr prt pru prx pt- ptc pte ptf pti ptp ptr ptt ptu ptx puc pue puf pui pup pur put puu pxc pxe pxr pxt rcc rce rcf rci rcp rcr rct rcu rcx re- rec ree ref rei rep rer ret reu rex rfc rfe rff rfi rfp rfr rft rfu ric rie rif rii rip rir rit rix rpc rpe rpf rpi rpp rpr rpt rpu rpx rrc rrf rri rrp rrr rrt rru rtc rte rtf rti rtp rtr rtt rtu rtx ruc rue ruf rui rup rur rut ruu rux rxp rxr t-x tcc tce tcf tci tcp tcr tct tcu tcx te- tec tee tef tei tep ter tet teu tex tfc tfe tff tfi tfp tfr tft tfu tfx tic tie tif tii tip tir tit tiu tix tpc tpe tpf tpi tpp tpr tpt tpu tpx trc tre trf tri trp trr trt tru trx ttc tte ttf tti ttp ttr ttt ttu ttx tuc tue tuf tui tup tur tut tuu tux txe txf txi txt txu ucc uce ucf uci ucp ucr uct ucu uec uee uef uei uep uer uet ufc ufe uff ufi ufp ufr uft ufu ufx uic uie uif uii uip uir uit uiu up- upc upe upf upi upp upr upt upu upx ur- urc ure urf uri urp urr urt uru urx utc ute utf uti utp utr utt utu utx uuc uue uur uut uuu uxc uxf uxr uxt uxu xcf xci xcp xcr xcx xee xep xer xet xeu xex xfe xft xfx xic xie xii xit xiu xix xpc xpe xpf xpp xpt xrc xrf xrt xrx xtc xtf xti xtp xtr xtx xue xui xup xxi xxp xxx