a-a a-b a-i a-t aaa aab aad aai aan aap aar aat ab- aba abb abd abi abn abp abr abt ad- ada adb add adi adn adp adr adt ai- aia aib aid aii ain aip air ait an- ana anb and ani ann anp anr ant ap- apa apb apd api apn app apr apt ar- ara arb ard ari arn arp arr art at- ata atb atd ati atn atp atr att b-p baa bab bad bai ban bap bar bat bba bbb bbd bbi bbn bbp bbr bbt bda bdb bdd bdi bdp bdr bdt bi- bia bib bid bii bin bip bir bit bna bnb bnd bni bnn bnp bnr bnt bpa bpb bpd bpi bpn bpp bpr bpt bra brb brd bri brn brp brr brt bta btb btd bti btn btp btr btt daa dab dad dai dan dap dar dat dba dbb dbd dbi dbn dbp dbr dbt dda ddb ddd ddi ddn ddp ddr ddt di- dia dib did dii din dip dir dit dna dnb dnd dni dnn dnp dnr dnt dpa dpb dpd dpi dpn dpp dpr dpt dra drb drd dri drn drp drr drt dta dtb dtd dti dtn dtp dtr dtt i-d ia- iaa iab iad iai ian iap iar iat iba ibb ibd ibi ibn ibp ibr ibt ida idb idd idi idn idp idr idt iia iib iid iii iin iip iir iit in- ina inb ind ini inn inp inr int ipa ipb ipd ipi ipn ipp ipr ipt ir- ira irb ird iri irn irp irr irt ita itb itd iti itn itp itt n-i naa nab nad nai nan nap nar nat nba nbb nbd nbi nbn nbp nbr nbt nda ndb ndd ndi ndn ndp ndr ndt nia nib nid nii nin nip nir nit nna nnb nni nnn nnp nnt npa npb npd npi npn npp npr npt nra nrb nrd nri nrn nrp nrr nrt nta ntb ntd nti ntn ntp ntr ntt p-p paa pab pad pai pan pap par pat pba pbb pbd pbi pbn pbp pbr pbt pda pdb pdd pdi pdn pdp pdr pdt pia pib pid pii pin pip pir pit pn- pna pnb pnd pni pnn pnp pnr pnt ppa ppb ppd ppi ppn ppp ppr ppt pra prb prd pri prn prp prr prt pt- pta ptb ptd pti ptn ptp ptr ptt ra- raa rab rad rai ran rap rar rat rba rbb rbd rbi rbn rbp rbr rbt rda rdb rdd rdi rdn rdp rdr rdt ria rib rid rii rin rip rir rit rna rnb rnd rni rnn rnp rnr rnt rpa rpb rpd rpi rpn rpp rpr rpt rra rrb rrd rri rrn rrp rrr rrt rta rtb rtd rti rtn rtp rtr rtt taa tab tad tai tan tap tar tat tba tbb tbd tbi tbn tbp tbr tbt tda tdb tdd tdi tdn tdp tdr tdt tia tib tid tii tin tip tir tit tna tnb tnd tni tnn tnp tnr tnt tpa tpb tpd tpi tpn tpp tpr tpt tra trb trd tri trn trp trr trt tta ttb ttd tti ttn ttp ttr ttt