-er -ic a-a a-b a-c a-i a-t aaa aab aac aad aae aaf aai aar aat ab- aba abb abc abd abe abf abi abr abt ac- aca acb acc acd ace acf aci acr act ad- ada adb adc add ade adf adi adr adt aea aeb aec aed aee aef aei aer aet af- afa afb afc afd afe aff afi afr aft ai- aia aib aic aid aie aif aii air ait ar- ara arb arc ard are arf ari arr art at- ata atb atc atd ate atf ati atr att baa bab bac bad bae baf bai bar bat bba bbb bbc bbd bbe bbf bbi bbr bbt bca bcb bcc bcd bce bcf bci bcr bct bda bdb bdc bdd bde bdf bdi bdr bdt be- bea beb bec bed bee bef bei ber bet bfa bfb bfc bfd bfe bff bfi bfr bft bi- bia bib bic bid bie bif bii bir bit bra brb brd bre brf bri brr brt bta btb btc btd bte btf bti btr btt c-- caa cab cac cad cae caf cai car cat cba cbb cbc cbd cbe cbf cbi cbr cbt cca ccb ccc ccd cce ccf cci ccr cct cda cdb cdc cdd cde cdf cdi cdr cdt ce- cea ceb cec ced cee cef cei cer cet cfa cfb cfc cfd cfe cff cfi cfr cft ci- cia cib cic cid cie cif cii cir cit cra crb crc crd cre crf cri crr crt cta ctb ctc ctd cte ctf cti ctr ctt daa dab dac dad dae daf dai dar dat dba dbb dbc dbd dbe dbf dbi dbr dbt dca dcb dcc dcd dce dcf dci dcr dct dda ddb ddc ddd dde ddf ddi ddr ddt de- dea deb dec ded dee def dei der det dfa dfb dfc dfd dfe dff dfi dfr dft di- dia dib dic did die dif dii dir dit dra drb drc drd dre dri drr drt dta dtb dtc dtd dte dtf dti dtr dtt eaa eab eac ead eae eaf eai ear eat eba ebb ebc ebd ebe ebf ebi ebr ebt ec- eca ecb ecc ecd ece ecf eci ecr ect ed- eda edb edc edd ede edf edi edr edt eea eeb eec eed eee eef eer eet ef- efa efb efc efd efe eff efi efr eft eia eib eic eid eie eif eii eir eit era erb erc erd ere erf eri err ert eta etb etc etd ete etf eti etr ett faa fab fac fad fae faf fai far fat fba fbb fbc fbd fbe fbf fbi fbr fbt fca fcb fcc fcd fce fcf fci fcr fct fda fdb fdc fdd fde fdf fdi fdr fdt fea feb fec fed fee fef fei fer fet ffa ffc ffd ffe fff ffi ffr fft fia fib fic fid fie fif fii fir fit fra frb frc frd fre frf fri frr frt fta ftb ftc ftd fte ftf fti ftr ftt i-d i-f ia- iaa iab iac iad iae iaf iai iar iat iba ibb ibc ibd ibe ibf ibi ibr ibt ica icb icc icd ice icf ici icr ict ida idb idc idd ide idf idi idr idt ie- iea iec ied iee ief iei ier iet ifa ifb ifc ifd ife iff ifi ifr ift iia iib iic iid iie iif iii iir iit ir- ira irb irc ird ire irf iri irr irt ita itb itc itd ite itf iti itt ra- raa rab rac rad rae raf rai rar rat rba rbb rbc rbd rbe rbf rbi rbr rbt rca rcb rcc rcd rce rcf rci rcr rct rda rdb rdc rdd rde rdf rdi rdr rdt re- rea reb rec red ree ref rei rer ret rfa rfb rfc rfd rfe rff rfi rfr rft ria rib ric rid rie rif rii rir rit rra rrb rrc rrd rrf rri rrr rrt rta rtb rtc rtd rte rtf rti rtr rtt taa tab tac tad tae taf tai tar tat tba tbb tbc tbd tbe tbf tbi tbr tbt tca tcb tcc tcd tce tcf tci tcr tct tda tdb tdc tdd tde tdf tdi tdr tdt te- tea teb tec ted tee tef tei ter tet tfa tfb tfc tfd tfe tff tfi tfr tft tia tib tic tid tie tif tii tir tit tra trb trc trd tre trf tri trr trt tta ttb ttc ttd tte ttf tti ttr ttt