a-a a-b a-i a-t aaa aab aae aai aan aao aap aat ab- aba abb abe abi abn abo abp abt aea aeb aee aei aen aeo aep aet ai- aia aib aie aii ain aio aip ait an- ana anb ane ani ann ano anp ant aoa aob aoe aoi aon aoo aop aot ap- apa apb ape api apn apo app apt at- ata atb ate ati atn ato atp att b-p baa bab bae bai ban bao bap bat bba bbb bbe bbi bbn bbo bbp bbt be- bea beb bee bei ben beo bep bet bi- bia bib bie bii bin bio bip bit bna bnb bne bni bnn bno bnp bnt boa bob boe boi bon boo bop bot bpa bpb bpe bpi bpn bpo bpp bpt bta btb bte bti btn bto btp btt eaa eab eae eai ean eao eap eat eba ebb ebe ebi ebn ebo ebp ebt eea eeb eee een eeo eep eet eia eib eie eii ein eio eip eit en- ena enb ene eni enn eno enp ent eo- eoa eob eoe eoi eon eoo eop eot ep- epa epb epe epi epn epo epp ept eta etb ete eti etn eto etp ett ia- iaa iab iae iai ian iao iap iat iba ibb ibe ibi ibn ibo ibp ibt ie- iea iee iei ien iep iet iia iib iie iii iin iio iip iit in- ina inb ine ini inn ino inp int io- ioa iob ioe ioi ion ioo iop iot ipa ipb ipe ipi ipn ipo ipp ipt ita itb ite iti itn ito itp itt n-i naa nab nae nai nan nao nap nat nba nbb nbe nbi nbn nbo nbp nbt ne- nea neb nee nei nen neo nep net nia nib nie nii nin nio nip nit nna nnb nne nni nnn nno nnp nnt no- noa nob noe noi non noo nop not npa npb npe npi npn npo npp npt nta ntb nte nti ntn nto ntp ntt o-i oaa oab oae oai oan oao oap oat ob- oba obb obe obi obn obo obp obt oea oeb oee oei oen oeo oep oet oia oib oie oii oin oio oip oit on- ona onb one oni onn ono onp ont oo- ooa oob ooi oon ooo oop oot op- opa opb ope opi opn opo opp opt ot- ota otb ote oti otn oto otp ott p-p paa pab pae pai pan pao pap pat pba pbb pbe pbi pbn pbo pbp pbt pea peb pee pei pen peo pep pet pia pib pie pii pin pio pip pit pn- pna pnb pne pni pnn pno pnp pnt poa pob poe poi pon poo pop pot ppa ppb ppe ppi ppn ppo ppp ppt pt- pta ptb pte pti ptn pto ptp ptt taa tab tae tai tan tao tap tat tba tbb tbe tbi tbn tbo tbp tbt te- tea teb tee tei ten teo tep tet tia tib tie tii tin tio tip tit tna tnb tne tni tnn tno tnp tnt to- toa tob toe toi ton too top tot tpa tpb tpe tpi tpn tpo tpp tpt tta ttb tte tti ttn tto ttp ttt