a-a a-b a-i aaa aab aad aae aag aai aan aap ab- aba abb abd abe abg abi abn abp ad- ada adb add ade adg adi adn adp aea aeb aed aee aeg aei aen aep ag- aga agb agd age agg agi agn agp ai- aia aib aid aie aig aii ain aip an- ana anb and ane ang ani ann anp ap- apa apb apd ape apg api apn app b-p baa bab bad bae bag bai ban bap bba bbb bbd bbe bbg bbi bbn bbp bda bdb bdd bde bdg bdi bdp be- bea beb bed bee beg bei ben bep bga bgb bgd bge bgg bgi bgn bgp bi- bia bib bid bie big bii bin bip bna bnb bnd bne bng bni bnn bnp bpa bpb bpd bpe bpg bpi bpn bpp daa dab dad dae dag dai dan dap dba dbb dbd dbe dbg dbi dbn dbp dda ddb ddd dde ddg ddi ddn ddp de- dea deb ded dee deg dei den dep dga dgd dge dgg dgi dgn dgp di- dia dib did die dig dii din dip dna dnb dnd dne dng dni dnn dnp dpa dpb dpd dpe dpg dpi dpn dpp eaa eab ead eae eag eai ean eap eba ebb ebd ebe ebg ebi ebn ebp ed- eda edb edd ede edg edi edn edp eea eeb eed eee eeg een eep ega egb egd ege egg egi egn egp eia eib eid eie eig eii ein eip en- ena enb end ene eng eni enn enp ep- epa epb epd epe epg epi epn epp g-d g-p gaa gab gad gae gag gai gan gap gba gbd gbe gbg gbi gbn gbp gda gdb gdd gde gdi gdn gdp ge- gea geb ged gee geg gei gen gep gga ggb ggd ggg ggi ggn ggp gia gib gid gie gig gii gin gip gna gnb gnd gne gni gnn gnp gpa gpb gpd gpe gpg gpi gpn gpp i-d ia- iaa iab iad iae iag iai ian iap iba ibb ibd ibe ibg ibi ibn ibp ida idb idd ide idg idi idn idp ie- iea ied iee ieg iei ien iep iga igb igd ige igg igi ign igp iia iib iid iie iii iin iip in- ina inb ind ine ing ini inn inp ipa ipb ipd ipe ipg ipi ipn ipp n-i naa nab nad nae nag nai nan nap nba nbb nbd nbe nbg nbi nbn nbp nda ndb ndd nde ndg ndi ndn ndp ne- nea neb ned nee neg nei nen nep nga ngb ngd nge ngg ngi ngn ngp nia nib nid nie nig nii nin nip nna nnb nne nng nni nnn nnp npa npb npd npe npg npi npn npp p-p paa pab pad pae pag pai pan pap pba pbb pbd pbe pbg pbi pbn pbp pda pdb pdd pde pdg pdi pdn pdp pea peb ped pee peg pei pen pep pga pgb pgd pge pgg pgi pgn pgp pia pib pid pie pig pii pin pip pn- pna pnb pnd pne png pni pnn pnp ppa ppb ppd ppe ppg ppi ppn ppp