-er -ic a-a a-b a-c a-i a-t aaa aab aac aad aae aai aan aar aat ab- aba abb abc abd abe abi abn abr abt ac- aca acb acc acd ace aci acn acr act ad- ada adb adc add ade adi adn adr adt aea aeb aec aed aee aei aen aer aet ai- aia aib aic aid aie aii ain air ait an- ana anb anc and ane ani ann anr ant ar- ara arb arc ard are ari arn arr art at- ata atb atc atd ate ati atn atr att baa bab bac bad bae bai ban bar bat bba bbb bbc bbd bbe bbi bbn bbr bbt bca bcb bcc bcd bce bci bcn bcr bct bda bdb bdc bdd bde bdi bdr bdt be- bea beb bec bed bee bei ben ber bet bi- bia bib bic bid bie bii bin bir bit bna bnb bnc bnd bne bni bnn bnr bnt bra brb brd bre bri brn brr brt bta btb btc btd bte bti btn btr btt c-- caa cab cac cad cae cai can car cat cba cbb cbc cbd cbe cbi cbn cbr cbt cca ccb ccc ccd cce cci ccn ccr cct cda cdb cdc cdd cde cdi cdn cdr cdt ce- cea ceb cec ced cee cei cen cer cet ci- cia cib cic cid cie cii cin cir cit cn- cna cnb cnc cnd cne cni cnn cnr cnt cra crb crc crd cre cri crn crr crt cta ctb ctc ctd cte cti ctn ctr ctt daa dab dac dad dae dai dan dar dat dba dbb dbc dbd dbe dbi dbn dbr dbt dca dcb dcc dcd dce dci dcn dcr dct dda ddb ddc ddd dde ddi ddn ddr ddt de- dea deb dec ded dee dei den der det di- dia dib dic did die dii din dir dit dna dnb dnc dnd dne dni dnn dnr dnt dra drb drc drd dre dri drn drr drt dta dtb dtc dtd dte dti dtn dtr dtt eaa eab eac ead eae eai ean ear eat eba ebb ebc ebd ebe ebi ebn ebr ebt ec- eca ecb ecc ecd ece eci ecn ecr ect ed- eda edb edc edd ede edi edn edr edt eea eeb eec eed eee een eer eet eia eib eic eid eie eii ein eir eit en- ena enb enc end ene eni enn enr ent era erb erc erd ere eri ern err ert eta etb etc etd ete eti etn etr ett i-d ia- iaa iab iac iad iae iai ian iar iat iba ibb ibc ibd ibe ibi ibn ibr ibt ica icb icc icd ice ici icn icr ict ida idb idc idd ide idi idn idr idt ie- iea iec ied iee iei ien ier iet iia iib iic iid iie iii iin iir iit in- ina inb inc ind ine ini inn inr int ir- ira irb irc ird ire iri irn irr irt ita itb itc itd ite iti itn itt n-i naa nab nac nad nae nai nan nar nat nba nbb nbc nbd nbe nbi nbn nbr nbt nca ncb ncc ncd nce nci ncn ncr nct nda ndb ndc ndd nde ndi ndn ndr ndt ne- nea neb nec ned nee nei nen ner net nia nib nic nid nie nii nin nir nit nna nnb nnc nne nni nnn nnt nra nrb nrc nrd nre nri nrn nrr nrt nta ntb ntc ntd nte nti ntn ntr ntt ra- raa rab rac rad rae rai ran rar rat rba rbb rbc rbd rbe rbi rbn rbr rbt rca rcb rcc rcd rce rci rcn rcr rct rda rdb rdc rdd rde rdi rdn rdr rdt re- rea reb rec red ree rei ren rer ret ria rib ric rid rie rii rin rir rit rna rnb rnc rnd rni rnn rnr rnt rra rrb rrc rrd rri rrn rrr rrt rta rtb rtc rtd rte rti rtn rtr rtt taa tab tac tad tae tai tan tar tat tba tbb tbc tbd tbe tbi tbn tbr tbt tca tcb tcc tcd tce tci tcn tcr tct tda tdb tdc tdd tde tdi tdn tdr tdt te- tea teb tec ted tee tei ten ter tet tia tib tic tid tie tii tin tir tit tna tnb tnc tnd tne tni tnn tnr tnt tra trb trc trd tre tri trn trr trt tta ttb ttc ttd tte tti ttn ttr ttt