-er -ic a-a a-c a-i a-t aaa aac aad aae aaf aai aap aar aat ac- aca acc acd ace acf aci acp acr act ad- ada adc add ade adf adi adp adr adt aea aec aed aee aef aei aep aer aet af- afa afc afd afe aff afi afp afr aft ai- aia aic aid aie aif aii aip air ait ap- apa apc apd ape apf api app apr apt ar- ara arc ard are arf ari arp arr art at- ata atc atd ate atf ati atp atr att c-- caa cac cad cae caf cai cap car cat cca ccc ccd cce ccf cci ccp ccr cct cda cdc cdd cde cdf cdi cdp cdr cdt ce- cea cec ced cee cef cei cep cer cet cfa cfc cfd cfe cff cfi cfp cfr cft ci- cia cic cid cie cif cii cip cir cit cpa cpc cpd cpe cpf cpi cpp cpr cpt cra crc crd cre crf cri crp crr crt cta ctc ctd cte ctf cti ctp ctr ctt daa dac dad dae daf dai dap dar dat dca dcc dcd dce dcf dci dcp dcr dct dda ddc ddd dde ddf ddi ddp ddr ddt de- dea dec ded dee def dei dep der det dfa dfc dfd dfe dff dfi dfp dfr dft di- dia dic did die dif dii dip dir dit dpa dpc dpd dpe dpf dpi dpp dpr dpt dra drc drd dre dri drp drr drt dta dtc dtd dte dtf dti dtp dtr dtt eaa eac ead eae eaf eai eap ear eat ec- eca ecc ecd ece ecf eci ecr ect ed- eda edc edd ede edf edi edp edr edt eea eec eed eee eef eep eer eet ef- efa efc efd efe eff efi efp efr eft eia eic eid eie eif eii eip eir eit ep- epa epc epd epe epf epi epp epr ept era erc erd ere erf eri erp err ert eta etc etd ete etf eti etp etr ett faa fac fad fae faf fai fap far fat fca fcc fcd fce fcf fci fcp fcr fct fda fdc fdd fde fdf fdi fdp fdr fdt fea fec fed fee fef fei fep fer fet ffa ffc ffd ffe fff ffi ffp ffr fft fia fic fid fie fif fii fip fir fit fpa fpc fpd fpe fpi fpp fpr fpt fra frc frd fre frf fri frp frr frt fta ftc ftd fte ftf fti ftp ftr ftt i-d i-f ia- iaa iac iad iae iaf iai iap iar iat ica icc icd ice icf ici icp icr ict ida idc idd ide idf idi idp idr idt ie- iea iec ied iee ief iei iep ier iet ifa ifc ifd ife iff ifi ifp ifr ift iia iic iid iie iif iii iip iir iit ipa ipc ipd ipe ipf ipi ipp ipr ipt ir- ira irc ird ire irf iri irp irr irt ita itc itd ite itf iti itp itt p-p paa pac pad pae paf pai pap par pat pca pcc pcd pce pcf pci pcp pcr pct pda pdc pdd pde pdf pdi pdp pdr pdt pea pec ped pee pef pei pep per pet pfa pfc pfd pfe pff pfi pfp pfr pft pia pic pid pie pif pii pip pir pit ppa ppc ppd ppe ppf ppi ppp ppr ppt pra prc prd pre prf pri prp prr prt pt- pta ptc ptd pte ptf pti ptp ptr ptt ra- raa rac rad rae raf rai rap rar rat rca rcc rcd rce rcf rci rcp rcr rct rda rdc rdd rde rdf rdi rdp rdr rdt re- rea rec red ree ref rei rep rer ret rfa rfc rfd rfe rff rfi rfp rfr rft ria ric rid rie rif rii rip rir rit rpa rpc rpd rpe rpf rpi rpp rpr rpt rra rrc rrd rrf rri rrp rrr rrt rta rtc rtd rte rtf rti rtp rtr rtt taa tac tad tae taf tai tap tar tat tca tcc tcd tce tcf tci tcp tcr tct tda tdc tdd tde tdf tdi tdp tdr tdt te- tea tec ted tee tef tei tep ter tet tfa tfc tfd tfe tff tfi tfp tfr tft tia tic tid tie tif tii tip tir tit tpa tpc tpd tpe tpf tpi tpp tpr tpt tra trc trd tre trf tri trp trr trt tta ttc ttd tte ttf tti ttp ttr ttt