a-a a-c aaa aac aah aan aao aap aar aax ac- aca acc ach acn aco acp acr acx aha ahc ahh ahn aho ahp ahr ahx an- ana anc anh ann ano anp anr anx aoa aoc aoh aon aoo aop aor aox ap- apa apc aph apn apo app apr apx ar- ara arc arh arn aro arp arr arx ax- axa axh axn axo axp axr axx c-- caa cac cah can cao cap car cax cca ccc cch ccn cco ccp ccr ccx ch- cha chc chh chn cho chp chr chx cn- cna cnc cnh cnn cno cnp cnr cnx co- coa coc coh con coo cop cor cox cpa cpc cph cpn cpo cpp cpr cpx cra crc crh crn cro crp crr crx cxc cxh cxo cxp cxr cxx haa hac hah han hao hap har hax hca hcc hch hcn hco hcp hcr hha hhc hhh hhn hho hhp hhr hna hnc hnh hnn hno hoa hoc hoh hon hoo hop hor hox hpa hpc hph hpn hpo hpp hpr hr- hra hrc hrh hrn hro hrp hrr hxc naa nac nah nan nao nap nar nax nca ncc nch ncn nco ncp ncr ncx nha nhc nhh nhn nhp nhr nna nnc nnh nnn nno nnp no- noa noc noh non noo nop nor nox npa npc nph npn npo npp npr nra nrc nrn nro nrp nrr nrx nxc oaa oac oah oan oao oap oar oax oc- oca occ och ocn oco ocp ocr ocx oha ohc ohh ohn oho ohp ohr on- ona onc onh onn ono onp onr onx oo- ooa ooc ooh oon ooo oop oor oox op- opa opc oph opn opo opp opr opx or- ora orc orh orn oro orp orr orx ox- oxa oxc oxn oxo oxx p-p paa pac pah pan pao pap par pax pca pcc pch pcn pco pcp pcr pcx pha phc phn pho php phr phx pn- pna pnc pnh pnn pno pnp pnr pnx poa poc poh pon poo pop por pox ppa ppc pph ppn ppo ppp ppr ppx pra prc prh prn pro prp prr prx pxc pxr ra- raa rac rah ran rao rap rar rax rca rcc rch rcn rco rcp rcr rcx rh- rha rhc rhh rhn rho rhp rhr rna rnc rnh rnn rno rnp rnr roa roc roh ron roo rop ror rox rpa rpc rph rpn rpo rpp rpr rpx rra rrc rrh rrn rrp rrr rxp rxr xaa xac xan xap xar xch xcp xcr xcx xhp xna xnc xno xoa xoc xon xoo xop xor xox xpa xpc xpn xpo xpp xrc xrx xxo xxp xxx