-ic a-a a-c a-i a-t aaa aac aai aao aap aat aax ac- aca acc aci aco acp act acx ai- aia aic aii aio aip ait aix aoa aoc aoi aoo aop aot aox ap- apa apc api apo app apt apx at- ata atc ati ato atp att atx ax- axa axi axo axp axt axx c-- caa cac cai cao cap cat cax cca ccc cci cco ccp cct ccx ci- cia cic cii cio cip cit cix co- coa coc coi coo cop cot cox cpa cpc cpi cpo cpp cpt cpx cta ctc cti cto ctp ctt ctx cxc cxi cxo cxp cxt cxx ia- iaa iac iai iao iap iat ica icc ici ico icp ict iia iic iii iio iip iit iix io- ioa ioc ioi ioo iop iot ipa ipc ipi ipo ipp ipt ipx ita itc iti ito itp itt itx ixc ixi o-i oaa oac oai oao oap oat oax oc- oca occ oci oco ocp oct ocx oia oic oii oio oip oit oo- ooa ooc ooi ooo oop oot oox op- opa opc opi opo opp opt opx ot- ota otc oti oto otp ott ox- oxa oxc oxi oxo oxt oxx p-p paa pac pai pao pap pat pax pca pcc pci pco pcp pct pcx pia pic pii pio pip pit pix poa poc poi poo pop pot pox ppa ppc ppi ppo ppp ppt ppx pt- pta ptc pti pto ptp ptt ptx pxc pxt t-x taa tac tai tao tap tat tax tca tcc tci tco tcp tct tcx tia tic tii tio tip tit tix to- toa toc toi too top tot tox tpa tpc tpi tpo tpp tpt tpx tta ttc tti tto ttp ttt ttx txi txt xaa xac xap xat xci xcp xcx xia xic xii xio xit xix xoa xoc xoi xoo xop xot xox xpa xpc xpo xpp xpt xtc xti xtp xtx xxi xxo xxp xxx