-er -ic a-a a-b a-c a-i a-t aaa aab aac aad aae aaf aai aao aar aat ab- aba abb abc abd abe abf abi abo abr abt ac- aca acb acc acd ace acf aci aco acr act ad- ada adb adc add ade adf adi ado adr adt aea aeb aec aed aee aef aei aeo aer aet af- afa afb afc afd afe aff afi afo afr aft ai- aia aib aic aid aie aif aii aio air ait aoa aob aoc aod aoe aof aoi aoo aor aot ar- ara arb arc ard are arf ari aro arr art at- ata atb atc atd ate atf ati ato atr att baa bab bac bad bae baf bai bao bar bat bba bbb bbc bbd bbe bbf bbi bbo bbr bbt bca bcb bcc bcd bce bcf bci bco bcr bct bda bdb bdc bdd bde bdf bdi bdo bdr bdt be- bea beb bec bed bee bef bei beo ber bet bfa bfb bfc bfd bfe bff bfi bfo bfr bft bi- bia bib bic bid bie bif bii bio bir bit boa bob boc bod boe bof boi boo bor bot bra brb brd bre brf bri bro brr brt bta btb btc btd bte btf bti bto btr btt c-- caa cab cac cad cae caf cai cao car cat cba cbb cbc cbd cbe cbf cbi cbo cbr cbt cca ccb ccc ccd cce ccf cci cco ccr cct cda cdb cdc cdd cde cdf cdi cdo cdr cdt ce- cea ceb cec ced cee cef cei ceo cer cet cfa cfb cfc cfd cfe cff cfi cfo cfr cft ci- cia cib cic cid cie cif cii cio cir cit co- coa cob coc cod coe cof coi coo cor cot cra crb crc crd cre crf cri cro crr crt cta ctb ctc ctd cte ctf cti cto ctr ctt daa dab dac dad dae daf dai dao dar dat dba dbb dbc dbd dbe dbf dbi dbo dbr dbt dca dcb dcc dcd dce dcf dci dco dcr dct dda ddb ddc ddd dde ddf ddi ddo ddr ddt de- dea deb dec ded dee def dei deo der det dfa dfb dfc dfd dfe dff dfi dfo dfr dft di- dia dib dic did die dif dii dio dir dit doa dob doc dod doe dof doi doo dor dot dra drb drc drd dre dri dro drr drt dta dtb dtc dtd dte dtf dti dto dtr dtt eaa eab eac ead eae eaf eai eao ear eat eba ebb ebc ebd ebe ebf ebi ebo ebr ebt ec- eca ecb ecc ecd ece ecf eci eco ecr ect ed- eda edb edc edd ede edf edi edo edr edt eea eeb eec eed eee eef eeo eer eet ef- efa efb efc efd efe eff efi efo efr eft eia eib eic eid eie eif eii eio eir eit eo- eoa eob eoc eod eoe eof eoi eoo eor eot era erb erc erd ere erf eri ero err ert eta etb etc etd ete etf eti eto etr ett faa fab fac fad fae faf fai fao far fat fba fbb fbc fbd fbe fbf fbi fbo fbr fbt fca fcb fcc fcd fce fcf fci fco fcr fct fda fdb fdc fdd fde fdf fdi fdo fdr fdt fea feb fec fed fee fef fei feo fer fet ffa ffc ffd ffe fff ffi ffo ffr fft fia fib fic fid fie fif fii fir fit foa fob foc foe fof foi foo for fot fra frb frc frd fre frf fri fro frr frt fta ftb ftc ftd fte ftf fti fto ftr ftt i-d i-f ia- iaa iab iac iad iae iaf iai iao iar iat iba ibb ibc ibd ibe ibf ibi ibo ibr ibt ica icb icc icd ice icf ici ico icr ict ida idb idc idd ide idf idi ido idr idt ie- iea iec ied iee ief iei ier iet ifa ifb ifc ifd ife iff ifi ifo ifr ift iia iib iic iid iie iif iii iio iir iit io- ioa iob ioc iod ioe iof ioi ioo ior iot ir- ira irb irc ird ire irf iri iro irr irt ita itb itc itd ite itf iti ito itt o-i oaa oab oac oad oae oaf oai oao oar oat ob- oba obb obc obd obe obf obi obo obr obt oc- oca ocb occ ocd ocf oci oco ocr oct oda odb odc odd ode odf odi odo odr odt oea oeb oec oed oee oef oei oeo oer oet of- ofa ofb ofc ofd ofe off ofi ofo ofr oft oia oib oic oid oie oif oii oio oir oit oo- ooa oob ooc ood oof ooi ooo oor oot or- ora orb orc ord ore orf ori oro orr ort ot- ota otb otc otd ote otf oti oto otr ott ra- raa rab rac rad rae raf rai rao rar rat rba rbb rbc rbd rbe rbf rbi rbo rbr rbt rca rcb rcc rcd rce rcf rci rco rcr rct rda rdb rdc rdd rde rdf rdi rdo rdr rdt re- rea reb rec red ree ref rei reo rer ret rfa rfb rfc rfd rfe rff rfi rfo rfr rft ria rib ric rid rie rif rii rio rir rit roa rob roc rod roe rof roi roo ror rot rra rrb rrc rrd rrf rri rrr rrt rta rtb rtc rtd rte rtf rti rto rtr rtt taa tab tac tad tae taf tai tao tar tat tba tbb tbc tbd tbe tbf tbi tbo tbr tbt tca tcb tcc tcd tce tcf tci tco tcr tct tda tdb tdc tdd tde tdf tdi tdo tdr tdt te- tea teb tec ted tee tef tei teo ter tet tfa tfb tfc tfd tfe tff tfi tfo tfr tft tia tib tic tid tie tif tii tio tir tit to-