-er -ic a-a a-c a-i a-t aaa aac aae aai aan aar aat aax ac- aca acc ace aci acn acr act acx aea aec aee aei aen aer aet aex ai- aia aic aie aii ain air ait aix an- ana anc ane ani ann anr ant anx ar- ara arc are ari arn arr art arx at- ata atc ate ati atn atr att atx ax- axa axe axi axn axr axt axx c-- caa cac cae cai can car cat cax cca ccc cce cci ccn ccr cct ccx ce- cea cec cee cei cen cer cet cex ci- cia cic cie cii cin cir cit cix cn- cna cnc cne cni cnn cnr cnt cnx cra crc cre cri crn crr crt crx cta ctc cte cti ctn ctr ctt ctx cxc cxi cxr cxt cxx eaa eac eae eai ean ear eat eax ec- eca ecc ece eci ecn ecr ect ecx eea eec eee een eer eet eex eia eic eie eii ein eir eit eix en- ena enc ene eni enn enr ent era erc ere eri ern err ert eta etc ete eti etn etr ett etx ex- exa exc exe exi exr ext exx ia- iaa iac iae iai ian iar iat ica icc ice ici icn icr ict ie- iea iec iee iei ien ier iet iex iia iic iie iii iin iir iit iix in- ina inc ine ini inn inr int inx ir- ira irc ire iri irn irr irt irx ita itc ite iti itn itt itx ixc ixe ixi ixn n-i naa nac nae nai nan nar nat nax nca ncc nce nci ncn ncr nct ncx ne- nea nec nee nei nen ner net nex nia nic nie nii nin nir nit nix nna nnc nne nni nnn nnt nra nrc nre nri nrn nrr nrt nrx nta ntc nte nti ntn ntr ntt ntx nxc nxt ra- raa rac rae rai ran rar rat rax rca rcc rce rci rcn rcr rct rcx re- rea rec ree rei ren rer ret rex ria ric rie rii rin rir rit rix rna rnc rni rnn rnr rnt rra rrc rri rrn rrr rrt rta rtc rte rti rtn rtr rtt rtx rxr t-x taa tac tae tai tan tar tat tax tca tcc tce tci tcn tcr tct tcx te- tea tec tee tei ten ter tet tex tia tic tie tii tin tir tit tix tna tnc tne tni tnn tnr tnt tnx tra trc tre tri trn trr trt trx tta ttc tte tti ttn ttr ttt ttx txe txi txn txt xaa xac xan xar xat xci xcr xcx xee xen xer xet xex xia xic xie xii xin xit xix xna xnc xrc xrt xrx xtc xti xtr xtx xxi xxx