-er a-a a-c aaa aac aae aah aaj aak aan aao aar ac- aca acc ace ach acj ack acn aco acr aea aec aee aeh aej aek aen aeo aer aha ahc ahe ahh ahj ahk ahn aho ahr aja ajc aje ajh ajj ajk ajn ajo ajr aka akc ake akh akj akk akn ako akr an- ana anc ane anh anj ank ann ano anr aoa aoc aoe aoh aoj aok aon aoo aor ar- ara arc are arh arj ark arn aro arr c-- c-j caa cac cae cah caj cak can cao car cca ccc cce cch ccj cck ccn cco ccr ce- cea cec cee ceh cej cek cen ceo cer ch- cha chc che chh chk chn cho chr cja cjc cjk cjr cka ckc ckh cko cn- cna cnc cne cnh cnj cnn cno cnr co- coa coc coe coh coj cok con coo cor cra crc cre crh crj crk crn cro crr eaa eac eae eah eaj eak ean eao ear ec- eca ecc ece ech ecj eck ecn eco ecr eea eec eee eek een eeo eer eha ehc ehe ehh ehn eho ehr eja ejc ejo eka ekc eke ekh eko ekr en- ena enc ene enh enk enn eno enr eo- eoa eoc eoe eoh eok eon eoo eor era erc ere erh erk ern ero err haa hac hae hah haj hak han hao har hca hcc hce hch hcj hck hcn hco hcr he- hea hec hee heh hej hek hen heo her hha hhc hhe hhh hhj hhk hhn hho hhr hja hjk hjn hjo hjr hka hkh hkk hkn hko hkr hna hnc hne hnh hnj hnk hnn hno hoa hoc hoe hoh hok hon hoo hor hr- hra hrc hre hrh hrj hrk hrn hro hrr jaa jac jae jah jaj jak jan jao jar jca jcc jce jch jck jco jcr jea jec jee jeh jej jek jen jeo jer jha jhc jhe jhj jhn jho jhr jja jjc jjj jjk jjr jka jkh jkk jkn jko jkr jna jnc jne jnh jnj jnn jno jnr joa joc joe joh joj jok jon joo jor jra jrc jrk jrn jro jrr ka- kaa kac kae kah kaj kak kan kao kar kca kcc kce kch kck kcn kcr ke- kea kec kee keh kek ken keo ker kha khe khh khj khk khn kho khr kjc kje kjr kkc kke kkh kkk kkn kkr kn- kna knc kne knk knn kno knr koa koc koe koh kok kon koo kor kra krc krk krn kro krr naa nac nae nah naj nak nan nao nar nca ncc nce nch nck ncn nco ncr ne- nea nec nee neh nej nek nen neo ner nha nhc nhe nhh nhj nhk nhn nhr nja njc nje njk njn nka nkc nke nkj nkk nkn nko nkr nna nnc nne nnh nnk nnn nno no- noa noc noe noh noj nok non noo nor nra nrc nre nrj nrk nrn nro nrr oaa oac oae oah oaj oak oan oao oar oc- oca occ och ocj ock ocn oco ocr oea oec oee oeh oen oeo oer oha ohc ohe ohh ohn oho ohr oja ojc oje ojo oka okc oke okj okk oko okr on- ona onc one onh onj onk onn ono onr oo- ooa ooc ooh ook oon ooo oor or- ora orc ore orh ork orn oro orr ra- raa rac rae rah raj rak ran rao rar rca rcc rce rch rcj rcn rco rcr re- rea rec ree reh rek ren reo rer rh- rha rhc rhe rhh rhn rho rhr rja rjc rjk rjr rkc rke rkk rko rna rnc rnh rnn rno rnr roa roc roe roh roj rok ron roo ror rra rrc rrh rrk rrn rrr