-er a-a a-b a-c aaa aab aac aad aae aaj aan aao aar ab- aba abb abc abd abe abj abn abo abr ac- aca acb acc acd ace acj acn aco acr ad- ada adb adc add ade adj adn ado adr aea aeb aec aed aee aej aen aeo aer aja ajb ajc ajd aje ajj ajn ajo ajr an- ana anb anc and ane anj ann ano anr aoa aob aoc aod aoe aoj aon aoo aor ar- ara arb arc ard are arj arn aro arr baa bab bac bad bae baj ban bao bar bba bbb bbc bbd bbe bbn bbo bbr bca bcb bcc bcd bce bcj bcn bco bcr bda bdb bdc bdd bde bdj bdo bdr be- bea beb bec bed bee ben beo ber bja bjc bjd bjj bjn bjr bna bnb bnc bnd bne bnj bnn bno bnr boa bob boc bod boe boj bon boo bor bra brb brd bre brj brn bro brr c-- c-j caa cab cac cad cae caj can cao car cba cbb cbc cbd cbe cbj cbn cbo cbr cca ccb ccc ccd cce ccj ccn cco ccr cda cdb cdc cdd cde cdj cdn cdo cdr ce- cea ceb cec ced cee cej cen ceo cer cja cjb cjc cjd cjr cn- cna cnb cnc cnd cne cnj cnn cno cnr co- coa cob coc cod coe coj con coo cor cra crb crc crd cre crj crn cro crr daa dab dac dad dae daj dan dao dar dba dbb dbc dbd dbe dbn dbo dbr dca dcb dcc dcd dce dcn dco dcr dda ddb ddc ddd dde ddn ddo ddr de- dea deb dec ded dee dej den deo der dj- dja djb djc djd dje djo dna dnb dnc dnd dne dnj dnn dno dnr doa dob doc dod doe doj don doo dor dra drb drc drd dre drj drn dro drr eaa eab eac ead eae eaj ean eao ear eba ebb ebc ebd ebe ebj ebn ebo ebr ec- eca ecb ecc ecd ece ecj ecn eco ecr ed- eda edb edc edd ede edj edn edo edr eea eeb eec eed eee een eeo eer eja ejc ejd ejo en- ena enb enc end ene enn eno enr eo- eoa eob eoc eod eoe eon eoo eor era erb erc erd ere ern ero err j-d jaa jab jac jad jae jaj jan jao jar jba jbc jbj jbo jbr jca jcb jcc jcd jce jco jcr jda jdb jdc jde jdn jdo jdr jea jeb jec jed jee jej jen jeo jer jja jjb jjc jjj jjr jna jnc jnd jne jnj jnn jno jnr joa job joc jod joe joj jon joo jor jra jrb jrc jrn jro jrr naa nab nac nad nae naj nan nao nar nba nbb nbc nbd nbe nbn nbo nbr nca ncb ncc ncd nce ncn nco ncr nda ndb ndc ndd nde ndn ndo ndr ne- nea neb nec ned nee nej nen neo ner nja njc nje njn nna nnb nnc nne nnn nno no- noa nob noc nod noe noj non noo nor nra nrb nrc nrd nre nrj nrn nro nrr oaa oab oac oad oae oaj oan oao oar ob- oba obb obc obd obe obj obn obo obr oc- oca ocb occ ocd ocj ocn oco ocr oda odb odc odd ode odn odo odr oea oeb oec oed oee oen oeo oer oja ojb ojc ojd oje ojo on- ona onb onc ond one onj onn ono onr oo- ooa oob ooc ood oon ooo oor or- ora orb orc ord ore orn oro orr ra- raa rab rac rad rae raj ran rao rar rba rbb rbc rbd rbe rbn rbo rbr rca rcb rcc rcd rce rcj rcn rco rcr rda rdb rdc rdd rde rdj rdn rdo rdr re- rea reb rec red ree ren reo rer rja rjc rjr rna rnb rnc rnd rnn rno rnr roa rob roc rod roe roj ron roo ror rra rrb rrc rrd rrn rrr