-ic a-a a-c a-i aaa aac aad aae aai aao aap aax ac- aca acc acd ace aci aco acp acx ad- ada adc add ade adi ado adp adx aea aec aed aee aei aeo aep aex ai- aia aic aid aie aii aio aip aix aoa aoc aod aoe aoi aoo aop aox ap- apa apc apd ape api apo app apx ax- axa axe axi axo axp axx c-- caa cac cad cae cai cao cap cax cca ccc ccd cce cci cco ccp ccx cda cdc cdd cde cdi cdo cdp cdx ce- cea cec ced cee cei ceo cep cex ci- cia cic cid cie cii cio cip cix co- coa coc cod coe coi coo cop cox cpa cpc cpd cpe cpi cpo cpp cpx cxc cxi cxo cxp cxx daa dac dad dae dai dao dap dax dca dcc dcd dce dci dco dcp dcx dda ddc ddd dde ddi ddo ddp ddx de- dea dec ded dee dei deo dep dex di- dia dic did die dii dio dip dix doa doc dod doe doi doo dop dox dpa dpc dpd dpe dpi dpo dpp dxc dxd dxi dxo dxp dxx eaa eac ead eae eai eao eap eax ec- eca ecc ecd ece eci eco ecx ed- eda edc edd ede edi edo edp edx eea eec eed eee eeo eep eex eia eic eid eie eii eio eip eix eo- eoa eoc eod eoe eoi eoo eop ep- epa epc epd epe epi epo epp epx ex- exa exc exd exe exi exo exp exx i-d ia- iaa iac iad iae iai iao iap ica icc icd ice ici ico icp ida idc idd ide idi ido idp idx ie- iea iec ied iee iei iep iex iia iic iid iie iii iio iip iix io- ioa ioc iod ioe ioi ioo iop ipa ipc ipd ipe ipi ipo ipp ipx ixc ixe ixi o-i oaa oac oad oae oai oao oap oax oc- oca occ ocd oci oco ocp ocx oda odc odd ode odi odo odp oea oec oed oee oei oeo oep oex oia oic oid oie oii oio oip oo- ooa ooc ood ooi ooo oop oox op- opa opc opd ope opi opo opp opx ox- oxa oxc oxi oxo oxx p-p paa pac pad pae pai pao pap pax pca pcc pcd pce pci pco pcp pcx pda pdc pdd pde pdi pdo pdp pdx pea pec ped pee pei peo pep pex pia pic pid pie pii pio pip pix poa poc pod poe poi poo pop pox ppa ppc ppd ppe ppi ppo ppp ppx pxc pxe xaa xac xad xap xcd xci xcp xcx xda xdc xde xdi xed xee xep xex xia xic xie xii xio xix xoa xoc xod xoi xoo xop xox xpa xpc xpd xpe xpo xpp xxi xxo xxp xxx