-ic a-a a-c a-i a-t aaa aac aai aan aao aar aat aax ac- aca acc aci acn aco acr act acx ai- aia aic aii ain aio air ait aix an- ana anc ani ann ano anr ant anx aoa aoc aoi aon aoo aor aot aox ar- ara arc ari arn aro arr art arx at- ata atc ati atn ato atr att atx ax- axa axi axn axo axr axt axx c-- caa cac cai can cao car cat cax cca ccc cci ccn cco ccr cct ccx ci- cia cic cii cin cio cir cit cix cn- cna cnc cni cnn cno cnr cnt cnx co- coa coc coi con coo cor cot cox cra crc cri crn cro crr crt crx cta ctc cti ctn cto ctr ctt ctx cxc cxi cxo cxr cxt cxx ia- iaa iac iai ian iao iar iat ica icc ici icn ico icr ict iia iic iii iin iio iir iit iix in- ina inc ini inn ino inr int inx io- ioa ioc ioi ion ioo ior iot ir- ira irc iri irn iro irr irt irx ita itc iti itn ito itt itx ixc ixi ixn n-i naa nac nai nan nao nar nat nax nca ncc nci ncn nco ncr nct ncx nia nic nii nin nio nir nit nix nna nnc nni nnn nno nnt no- noa noc noi non noo nor not nox nra nrc nri nrn nro nrr nrt nrx nta ntc nti ntn nto ntr ntt ntx nxc nxt o-i oaa oac oai oan oao oar oat oax oc- oca occ oci ocn oco ocr oct ocx oia oic oii oin oio oir oit on- ona onc oni onn ono onr ont onx oo- ooa ooc ooi oon ooo oor oot oox or- ora orc ori orn oro orr ort orx ot- ota otc oti otn oto otr ott ox- oxa oxc oxi oxn oxo oxt oxx ra- raa rac rai ran rao rar rat rax rca rcc rci rcn rco rcr rct rcx ria ric rii rin rio rir rit rix rna rnc rni rnn rno rnr rnt roa roc roi ron roo ror rot rox rra rrc rri rrn rrr rrt rta rtc rti rtn rto rtr rtt rtx rxr t-x taa tac tai tan tao tar tat tax tca tcc tci tcn tco tcr tct tcx tia tic tii tin tio tir tit tix tna tnc tni tnn tno tnr tnt tnx to- toa toc toi ton too tor tot tox tra trc tri trn tro trr trt trx tta ttc tti ttn tto ttr ttt ttx txi txn txt xaa xac xan xar xat xci xcr xcx xia xic xii xin xio xit xix xna xnc xno xoa xoc xoi xon xoo xor xot xox xrc xrt xrx xtc xti xtr xtx xxi xxo xxx