-ic a-a a-c a-i a-t aaa aac aae aag aai aan aao aap aat ac- aca acc ace acg aci acn aco acp act aea aec aee aeg aei aen aeo aep aet ag- aga agc age agg agi agn ago agp agt ai- aia aic aie aig aii ain aio aip ait an- ana anc ane ang ani ann ano anp ant aoa aoc aoe aog aoi aon aoo aop aot ap- apa apc ape apg api apn apo app apt at- ata atc ate atg ati atn ato atp att c-- caa cac cae cag cai can cao cap cat cca ccc cce ccg cci ccn cco ccp cct ce- cea cec cee ceg cei cen ceo cep cet cga cgc cge cgg cgi cgn cgo cgp cgt ci- cia cic cie cig cii cin cio cip cit cn- cna cnc cne cng cni cnn cno cnp cnt co- coa coc coe cog coi con coo cop cot cpa cpc cpe cpg cpi cpn cpo cpp cpt cta ctc cte ctg cti ctn cto ctp ctt eaa eac eae eag eai ean eao eap eat ec- eca ecc ece ecg eci ecn eco ect eea eec eee eeg een eeo eep eet ega egc ege egg egi egn ego egp egt eia eic eie eig eii ein eio eip eit en- ena enc ene eng eni enn eno enp ent eo- eoa eoc eoe eog eoi eon eoo eop eot ep- epa epc epe epg epi epn epo epp ept eta etc ete etg eti etn eto etp ett g-p gaa gac gae gag gai gan gao gap gat gca gcc gce gcg gci gcn gco gcp gct ge- gea gec gee geg gei gen geo gep get gga ggc ggg ggi ggn ggo ggp ggt gia gic gie gig gii gin gio gip git gna gnc gne gni gnn gno gnp gnt goa goc goe gog goi gon goo gop got gpa gpc gpe gpg gpi gpn gpo gpp gpt gta gtc gte gtg gti gtn gto gtp gtt ia- iaa iac iae iag iai ian iao iap iat ica icc ice icg ici icn ico icp ict ie- iea iec iee ieg iei ien iep iet iga igc ige igg igi ign igo igp igt iia iic iie iii iin iio iip iit in- ina inc ine ing ini inn ino inp int io- ioa ioc ioe iog ioi ion ioo iop iot ipa ipc ipe ipg ipi ipn ipo ipp ipt ita itc ite itg iti itn ito itp itt n-i naa nac nae nag nai nan nao nap nat nca ncc nce ncg nci ncn nco ncp nct ne- nea nec nee neg nei nen neo nep net nga ngc nge ngg ngi ngn ngo ngp ngt nia nic nie nig nii nin nio nip nit nna nnc nne nng nni nnn nno nnp nnt no- noa noc noe nog noi non noo nop not npa npc npe npg npi npn npo npp npt nta ntc nte ntg nti ntn nto ntp ntt o-i oaa oac oae oag oai oan oao oap oat oc- oca occ ocg oci ocn oco ocp oct oea oec oee oeg oei oen oeo oep oet oga ogc oge ogg ogi ogn ogo ogp ogt oia oic oie oii oin oio oip oit on- ona onc one ong oni onn ono onp ont oo- ooa ooc oog ooi oon ooo oop oot op- opa opc ope opg opi opn opo opp opt ot- ota otc ote otg oti otn oto otp ott p-p paa pac pae pag pai pan pao pap pat pca pcc pce pcg pci pcn pco pcp pct pea pec pee peg pei pen peo pep pet pga pgc pge pgg pgi pgn pgo pgp pgt pia pic pie pig pii pin pio pip pit pn- pna pnc pne png pni pnn pno pnp pnt poa poc poe pog poi pon poo pop pot ppa ppc ppe ppg ppi ppn ppo ppp ppt pt- pta ptc pte ptg pti ptn pto ptp ptt taa tac tae tag tai tan tao tap tat tca tcc tce tcg tci tcn tco tcp tct te- tea tec tee teg tei ten teo tep tet tga tgc tge tgg tgi tgn tgo tgp tgt tia tic tie tig tii tin tio tip tit tna tnc tne tng tni tnn tno tnp tnt to- toa toc toe tog toi ton too top tot tpa tpc tpe tpg tpi tpn tpo tpp tpt tta ttc tte ttg tti ttn tto ttp ttt