-er a-a a-b a-i a-t aaa aab aad aae aag aai aan aao aar aat ab- aba abb abd abe abg abi abn abo abr abt ad- ada adb add ade adg adi adn ado adr adt aea aeb aed aee aeg aei aen aeo aer aet ag- aga agb agd age agg agi agn ago agr agt ai- aia aib aid aie aig aii ain aio air ait an- ana anb and ane ang ani ann ano anr ant aoa aob aod aoe aog aoi aon aoo aor aot ar- ara arb ard are arg ari arn aro arr art at- ata atb atd ate atg ati atn ato atr att baa bab bad bae bag bai ban bao bar bat bba bbb bbd bbe bbg bbi bbn bbo bbr bbt bda bdb bdd bde bdg bdi bdo bdr bdt be- bea beb bed bee beg bei ben beo ber bet bga bgb bgd bge bgg bgi bgn bgo bgr bgt bi- bia bib bid bie big bii bin bio bir bit bna bnb bnd bne bng bni bnn bno bnr bnt boa bob bod boe bog boi bon boo bor bot bra brb brd bre brg bri brn bro brr brt bta btb btd bte btg bti btn bto btr btt daa dab dad dae dag dai dan dao dar dat dba dbb dbd dbe dbg dbi dbn dbo dbr dbt dda ddb ddd dde ddg ddi ddn ddo ddr ddt de- dea deb ded dee deg dei den deo der det dga dgd dge dgg dgi dgn dgr dgt di- dia dib did die dig dii din dio dir dit dna dnb dnd dne dng dni dnn dno dnr dnt doa dob dod doe dog doi don doo dor dot dra drb drd dre drg dri drn dro drr drt dta dtb dtd dte dtg dti dtn dto dtr dtt eaa eab ead eae eag eai ean eao ear eat eba ebb ebd ebe ebg ebi ebn ebo ebr ebt ed- eda edb edd ede edg edi edn edo edr edt eea eeb eed eee eeg een eeo eer eet ega egb egd ege egg egi egn ego egr egt eia eib eid eie eig eii ein eio eir eit en- ena enb end ene eng eni enn eno enr ent eo- eoa eob eod eoe eog eoi eon eoo eor eot era erb erd ere erg eri ern ero err ert eta etb etd ete etg eti etn eto etr ett g-d gaa gab gad gae gag gai gan gao gar gat gba gbd gbe gbg gbi gbn gbo gbr gbt gda gdb gdd gde gdi gdn gdo gdr gdt ge- gea geb ged gee geg gei gen geo ger get gga ggb ggd ggg ggi ggn ggo ggr ggt gia gib gid gie gig gii gin gio gir git gna gnb gnd gne gni gnn gno gnr gnt goa gob god goe gog goi gon goo gor got gra grb grd gre grg gri grn gro grr grt gta gtb gtd gte gtg gti gtn gto gtr gtt i-d ia- iaa iab iad iae iag iai ian iao iar iat iba ibb ibd ibe ibg ibi ibn ibo ibr ibt ida idb idd ide idg idi idn ido idr idt ie- iea ied iee ieg iei ien ier iet iga igb igd ige igg igi ign igo igr igt iia iib iid iie iii iin iio iir iit in- ina inb ind ine ing ini inn ino inr int io- ioa iob iod ioe iog ioi ion ioo ior iot ir- ira irb ird ire irg iri irn iro irr irt ita itb itd ite itg iti itn ito itt n-i naa nab nad nae nag nai nan nao nar nat nba nbb nbd nbe nbg nbi nbn nbo nbr nbt nda ndb ndd nde ndg ndi ndn ndo ndr ndt ne- nea neb ned nee neg nei nen neo ner net nga ngb ngd nge ngg ngi ngn ngo ngt nia nib nid nie nig nii nin nio nir nit nna nnb nne nng nni nnn nno nnt no- noa nob nod noe nog noi non noo nor not nra nrb nrd nre nrg nri nrn nro nrr nrt nta ntb ntd nte ntg nti ntn nto ntr ntt o-i oaa oab oad oae oag oai oan oao oar oat ob- oba obb obd obe obg obi obn obo obr obt oda odb odd ode odg odi odn odo odr odt oea oeb oed oee oeg oei oen oeo oer oet oga ogd oge ogg ogi ogn ogo ogt oia oib oid oie oii oin oio oir oit on- ona onb ond one ong oni onn ono onr ont oo- ooa oob ood oog ooi oon ooo oor oot or- ora orb ord ore org ori orn oro orr ort ot- ota otb otd ote otg oti otn oto otr ott ra- raa rab rad rae rag rai ran rao rar rat rba rbb rbd rbe rbg rbi rbn rbo rbr rbt rda rdb rdd rde rdg rdi rdn rdo rdr rdt re- rea reb red ree reg rei ren reo rer ret rga rgb rgd rge rgg rgi rgn rgo rgr rgt ria rib rid rie rig rii rin rio rir rit rna rnb rnd rng rni rnn rno rnr rnt roa rob rod roe rog roi ron roo ror rot rra rrb rrd rrg rri rrn rrr rrt rta rtb rtd rte rtg rti rtn rto rtr rtt taa tab tad tae tag tai tan tao tar tat tba tbb tbd tbe tbg tbi tbn tbo tbr tbt tda tdb tdd tde tdg tdi tdn tdo tdr tdt te- tea teb ted tee teg tei ten teo ter tet tga tgb tge tgg tgi tgn tgo tgr tgt tia tib tid tie tig tii tin tio tir tit tna tnb tnd tne tng tni tnn tno tnr tnt to- toa tob tod toe tog toi ton too tor tot tra trb trd