-er -ji a-a a-b a-i aaa aab aae aaf aai aaj aan aao aar ab- aba abb abe abf abi abj abn abo abr aea aeb aee aef aei aej aen aeo aer af- afa afb afe aff afi afj afn afo afr ai- aia aib aie aif aii ain aio air aja ajb aje ajf aji ajj ajn ajo ajr an- ana anb ane anf ani anj ann ano anr aoa aob aoe aof aoi aoj aon aoo aor ar- ara arb are arf ari arj arn aro arr baa bab bae baf bai baj ban bao bar bba bbb bbe bbf bbi bbn bbo bbr be- bea beb bee bef bei ben beo ber bfa bfb bfe bff bfi bfj bfn bfo bfr bi- bia bib bie bif bii bij bin bio bir bja bjf bji bjj bjn bjr bna bnb bne bnf bni bnj bnn bno bnr boa bob boe bof boi boj bon boo bor bra brb bre brf bri brj brn bro brr eaa eab eae eaf eai eaj ean eao ear eba ebb ebe ebf ebi ebj ebn ebo ebr eea eeb eee eef een eeo eer ef- efa efb efe eff efi efo efr eia eib eie eif eii eij ein eio eir eja ejf eji ejo en- ena enb ene enf eni enn eno enr eo- eoa eob eoe eof eoi eon eoo eor era erb ere erf eri ern ero err faa fab fae faf fai faj fan fao far fba fbb fbe fbf fbi fbn fbo fbr fea feb fee fef fei fen feo fer ffa ffe fff ffi ffn ffo ffr fia fib fie fif fii fij fin fir fja fjb fji fna fnb fne fnf fni fnj fnn fnr foa fob foe fof foi fon foo for fra frb fre frf fri frj frn fro frr i-f ia- iaa iab iae iaf iai ian iao iar iba ibb ibe ibf ibi ibj ibn ibo ibr ie- iea iee ief iei iej ien ier ifa ifb ife iff ifi ifn ifo ifr iia iib iie iif iii iij iin iio iir ija ijb ije ijf iji ijn ijo in- ina inb ine inf ini inj inn ino inr io- ioa iob ioe iof ioi ioj ion ioo ior ir- ira irb ire irf iri irj irn iro irr j-i jaa jab jae jaf jai jaj jan jao jar jba jbf jbi jbj jbo jbr jea jeb jee jef jei jej jen jeo jer jfa jfb jfe jff jfi jfj jfo jfr jia jib jie jif jii jij jin jio jir jja jjb jjf jjj jjr jna jne jnf jnj jnn jno jnr joa job joe jof joi joj jon joo jor jra jrb jrf jri jrn jro jrr n-i naa nab nae naf nai naj nan nao nar nba nbb nbe nbf nbi nbn nbo nbr ne- nea neb nee nef nei nej nen neo ner nfa nfb nfe nff nfi nfn nfo nfr nia nib nie nif nii nin nio nir nja nje njf njn nna nnb nne nnf nni nnn nno no- noa nob noe nof noi noj non noo nor nra nrb nre nrf nri nrj nrn nro nrr o-i oaa oab oae oaf oai oaj oan oao oar ob- oba obb obe obf obi obj obn obo obr oea oeb oee oef oei oen oeo oer of- ofa ofb ofe off ofi ofn ofo ofr oia oib oie oif oii oin oio oir oja ojb oje oji ojo on- ona onb one onf oni onj onn ono onr oo- ooa oob oof ooi oon ooo oor or- ora orb ore orf ori orn oro orr ra- raa rab rae raf rai raj ran rao rar rba rbb rbe rbf rbi rbn rbo rbr re- rea reb ree ref rei ren reo rer rfa rfb rfe rff rfi rfj rfn rfo rfr ria rib rie rif rii rin rio rir rja rjf rjr rna rnb rni rnn rno rnr roa rob roe rof roi roj ron roo ror rra rrb rrf rri rrn rrr