-ic a-a a-c a-i a-t aaa aac aai aan aar aat aax ac- aca acc aci acn acr act acx ai- aia aic aii ain air ait aix an- ana anc ani ann anr ant anx ar- ara arc ari arn arr art arx at- ata atc ati atn atr att atx ax- axa axi axn axr axt axx c-- caa cac cai can car cat cax cca ccc cci ccn ccr cct ccx ci- cia cic cii cin cir cit cix cn- cna cnc cni cnn cnr cnt cnx cra crc cri crn crr crt crx cta ctc cti ctn ctr ctt ctx cxc cxi cxr cxt cxx ia- iaa iac iai ian iar iat ica icc ici icn icr ict iia iic iii iin iir iit iix in- ina inc ini inn inr int inx ir- ira irc iri irn irr irt irx ita itc iti itn itt itx ixc ixi ixn n-i naa nac nai nan nar nat nax nca ncc nci ncn ncr nct ncx nia nic nii nin nir nit nix nna nnc nni nnn nnt nra nrc nri nrn nrr nrt nrx nta ntc nti ntn ntr ntt ntx nxc nxt ra- raa rac rai ran rar rat rax rca rcc rci rcn rcr rct rcx ria ric rii rin rir rit rix rna rnc rni rnn rnr rnt rra rrc rri rrn rrr rrt rta rtc rti rtn rtr rtt rtx rxr t-x taa tac tai tan tar tat tax tca tcc tci tcn tcr tct tcx tia tic tii tin tir tit tix tna tnc tni tnn tnr tnt tnx tra trc tri trn trr trt trx tta ttc tti ttn ttr ttt ttx txi txn txt xaa xac xan xar xat xci xcr xcx xia xic xii xin xit xix xna xnc xrc xrt xrx xtc xti xtr xtx xxi xxx