-er a-a a-c aaa aac aae aah aan aao aap aar ac- aca acc ace ach acn aco acp acr aea aec aee aeh aen aeo aep aer aha ahc ahe ahh ahn aho ahp ahr an- ana anc ane anh ann ano anp anr aoa aoc aoe aoh aon aoo aop aor ap- apa apc ape aph apn apo app apr ar- ara arc are arh arn aro arp arr c-- caa cac cae cah can cao cap car cca ccc cce cch ccn cco ccp ccr ce- cea cec cee ceh cen ceo cep cer ch- cha chc che chh chn cho chp chr cn- cna cnc cne cnh cnn cno cnp cnr co- coa coc coe coh con coo cop cor cpa cpc cpe cph cpn cpo cpp cpr cra crc cre crh crn cro crp crr eaa eac eae eah ean eao eap ear ec- eca ecc ece ech ecn eco ecr eea eec eee een eeo eep eer eha ehc ehe ehh ehn eho ehp ehr en- ena enc ene enh enn eno enp enr eo- eoa eoc eoe eoh eon eoo eop eor ep- epa epc epe eph epn epo epp epr era erc ere erh ern ero erp err haa hac hae hah han hao hap har hca hcc hce hch hcn hco hcp hcr he- hea hec hee heh hen heo hep her hha hhc hhe hhh hhn hho hhp hhr hna hnc hne hnh hnn hno hoa hoc hoe hoh hon hoo hop hor hpa hpc hpe hph hpn hpo hpp hpr hr- hra hrc hre hrh hrn hro hrp hrr naa nac nae nah nan nao nap nar nca ncc nce nch ncn nco ncp ncr ne- nea nec nee neh nen neo nep ner nha nhc nhe nhh nhn nhp nhr nna nnc nne nnh nnn nno nnp no- noa noc noe noh non noo nop nor npa npc npe nph npn npo npp npr nra nrc nre nrn nro nrp nrr oaa oac oae oah oan oao oap oar oc- oca occ och ocn oco ocp ocr oea oec oee oeh oen oeo oep oer oha ohc ohe ohh ohn oho ohp ohr on- ona onc one onh onn ono onp onr oo- ooa ooc ooh oon ooo oop oor op- opa opc ope oph opn opo opp opr or- ora orc ore orh orn oro orp orr p-p paa pac pae pah pan pao pap par pca pcc pce pch pcn pco pcp pcr pea pec pee peh pen peo pep per pha phc phe phn pho php phr pn- pna pnc pne pnh pnn pno pnp pnr poa poc poe poh pon poo pop por ppa ppc ppe pph ppn ppo ppp ppr pra prc pre prh prn pro prp prr ra- raa rac rae rah ran rao rap rar rca rcc rce rch rcn rco rcp rcr re- rea rec ree reh ren reo rep rer rh- rha rhc rhe rhh rhn rho rhp rhr rna rnc rnh rnn rno rnp rnr roa roc roe roh ron roo rop ror rpa rpc rpe rph rpn rpo rpp rpr rra rrc rrh rrn rrp rrr