-ic a-a a-c a-i aaa aac aaf aai aan aao aap aar aax ac- aca acc acf aci acn aco acp acr acx af- afa afc aff afi afn afo afp afr afx ai- aia aic aif aii ain aio aip air aix an- ana anc anf ani ann ano anp anr anx aoa aoc aof aoi aon aoo aop aor aox ap- apa apc apf api apn apo app apr apx ar- ara arc arf ari arn aro arp arr arx ax- axa axi axn axo axp axr axx c-- caa cac caf cai can cao cap car cax cca ccc ccf cci ccn cco ccp ccr ccx cfa cfc cff cfi cfn cfo cfp cfr cfx ci- cia cic cif cii cin cio cip cir cix cn- cna cnc cnf cni cnn cno cnp cnr cnx co- coa coc cof coi con coo cop cor cox cpa cpc cpf cpi cpn cpo cpp cpr cpx cra crc crf cri crn cro crp crr crx cxc cxf cxi cxo cxp cxr cxx faa fac faf fai fan fao fap far fax fca fcc fcf fci fcn fco fcp fcr fcx ffa ffc fff ffi ffn ffo ffp ffr ffx fia fic fif fii fin fip fir fix fna fnc fnf fni fnn fnp fnr fnx foa foc fof foi fon foo fop for fox fpa fpc fpi fpn fpo fpp fpr fpx fra frc frf fri frn fro frp frr fxi fxp fxr fxx i-f ia- iaa iac iaf iai ian iao iap iar ica icc icf ici icn ico icp icr ifa ifc iff ifi ifn ifo ifp ifr ifx iia iic iif iii iin iio iip iir iix in- ina inc inf ini inn ino inp inr inx io- ioa ioc iof ioi ion ioo iop ior ipa ipc ipf ipi ipn ipo ipp ipr ipx ir- ira irc irf iri irn iro irp irr irx ixc ixi ixn n-i naa nac naf nai nan nao nap nar nax nca ncc ncf nci ncn nco ncp ncr ncx nfa nfc nff nfi nfn nfo nfp nfr nia nic nif nii nin nio nip nir nix nna nnc nnf nni nnn nno nnp no- noa noc nof noi non noo nop nor nox npa npc npf npi npn npo npp npr nra nrc nrf nri nrn nro nrp nrr nrx nxc o-i oaa oac oaf oai oan oao oap oar oax oc- oca occ ocf oci ocn oco ocp ocr ocx of- ofa ofc off ofi ofn ofo ofp ofr ofx oia oic oif oii oin oio oip oir on- ona onc onf oni onn ono onp onr onx oo- ooa ooc oof ooi oon ooo oop oor oox op- opa opc opf opi opn opo opp opr opx or- ora orc orf ori orn oro orp orr orx ox- oxa oxc oxf oxi oxn oxo oxx p-p paa pac paf pai pan pao pap par pax pca pcc pcf pci pcn pco pcp pcr pcx pfa pfc pff pfi pfn pfo pfp pfr pfx pia pic pif pii pin pio pip pir pix pn- pna pnc pnf pni pnn pno pnp pnr pnx poa poc pof poi pon poo pop por pox ppa ppc ppf ppi ppn ppo ppp ppr ppx pra prc prf pri prn pro prp prr prx pxc pxr ra- raa rac raf rai ran rao rap rar rax rca rcc rcf rci rcn rco rcp rcr rcx rfa rfc rff rfi rfn rfo rfp rfr ria ric rif rii rin rio rip rir rix rna rnc rni rnn rno rnp rnr roa roc rof roi ron roo rop ror rox rpa rpc rpf rpi rpn rpo rpp rpr rpx rra rrc rrf rri rrn rrp rrr rxp rxr xaa xac xaf xan xap xar xcf xci xcp xcr xcx xfa xfn xfx xia xic xii xin xio xix xna xnc xno xoa xoc xof xoi xon xoo xop xor xox xpa xpc xpf xpn xpo xpp xrc xrf xrx xxi xxo xxp xxx