-ic a-a a-b a-c a-i a-t aaa aab aac aae aai aan aao aap aas aat ab- aba abb abc abe abi abn abo abp abs abt ac- aca acb acc ace aci acn aco acp acs act aea aeb aec aee aei aen aeo aep aes aet ai- aia aib aic aie aii ain aio aip ais ait an- ana anb anc ane ani ann ano anp ans ant aoa aob aoc aoe aoi aon aoo aop aos aot ap- apa apb apc ape api apn apo app aps apt as- asa asb asc ase asi asn aso asp ass ast at- ata atb atc ate ati atn ato atp ats att b-p baa bab bac bae bai ban bao bap bas bat bba bbb bbc bbe bbi bbn bbo bbp bbs bbt bca bcb bcc bce bci bcn bco bcp bcs bct be- bea beb bec bee bei ben beo bep bes bet bi- bia bib bic bie bii bin bio bip bis bit bna bnb bnc bne bni bnn bno bnp bns bnt boa bob boc boe boi bon boo bop bos bot bpa bpb bpc bpe bpi bpn bpo bpp bps bpt bsa bsb bsc bse bsi bsn bso bsp bss bst bta btb btc bte bti btn bto btp bts btt c-- caa cab cac cae cai can cao cap cas cat cba cbb cbc cbe cbi cbn cbo cbp cbs cbt cca ccb ccc cce cci ccn cco ccp ccs cct ce- cea ceb cec cee cei cen ceo cep ces cet ci- cia cib cic cie cii cin cio cip cis cit cn- cna cnb cnc cne cni cnn cno cnp cns cnt co- coa cob coc coe coi con coo cop cos cot cpa cpb cpc cpe cpi cpn cpo cpp cps cpt csa csb csc cse csi csn cso csp css cst cta ctb ctc cte cti ctn cto ctp cts ctt eaa eab eac eae eai ean eao eap eas eat eba ebb ebc ebe ebi ebn ebo ebp ebs ebt ec- eca ecb ecc ece eci ecn eco ecs ect eea eeb eec eee een eeo eep ees eet eia eib eic eie eii ein eio eip eis eit en- ena enb enc ene eni enn eno enp ens ent eo- eoa eob eoc eoe eoi eon eoo eop eos eot ep- epa epb epc epe epi epn epo epp eps ept es- esa esb esc ese esi esn eso esp ess est eta etb etc ete eti etn eto etp ets ett ia- iaa iab iac iae iai ian iao iap ias iat iba ibb ibc ibe ibi ibn ibo ibp ibs ibt ica icb icc ice ici icn ico icp ics ict ie- iea iec iee iei ien iep ies iet iia iib iic iie iii iin iio iip iis iit in- ina inb inc ine ini inn ino inp ins int io- ioa iob ioc ioe ioi ion ioo iop ios iot ipa ipb ipc ipe ipi ipn ipo ipp ips ipt is- isa isb isc ise isi isn iso isp iss ist ita itb itc ite iti itn ito itp its itt n-i naa nab nac nae nai nan nao nap nas nat nba nbb nbc nbe nbi nbn nbo nbp nbs nbt nca ncb ncc nce nci ncn nco ncp ncs nct ne- nea neb nec nee nei nen neo nep nes net nia nib nic nie nii nin nio nip nis nit nna nnb nnc nne nni nnn nno nnp nns nnt no- noa nob noc noe noi non noo nop nos not npa npb npc npe npi npn npo npp nps npt nsa nsb nsc nse nsi nsn nso nsp nss nst nta ntb ntc nte nti ntn nto ntp nts ntt o-i oaa oab oac oae oai oan oao oap oas oat ob- oba obb obc obe obi obn obo obp obs obt oc- oca ocb occ oci ocn oco ocp ocs oct oea oeb oec oee oei oen oeo oep oes oet oia oib oic oie oii oin oio oip ois oit on- ona onb onc one oni onn ono onp ons ont oo- ooa oob ooc ooi oon ooo oop oos oot op- opa opb opc ope opi opn opo opp ops opt os- osa osb osc ose osi osn oso osp oss ost ot- ota otb otc ote oti otn oto otp ots ott p-p paa pab pac pae pai pan pao pap pas pat pba pbb pbc pbe pbi pbn pbo pbp pbs pbt pca pcb pcc pce pci pcn pco pcp pcs pct pea peb pec pee pei pen peo pep pes pet pia pib pic pie pii pin pio pip pis pit pn- pna pnb pnc pne pni pnn pno pnp pns pnt poa pob poc poe poi pon poo pop pos pot ppa ppb ppc ppe ppi ppn ppo ppp pps ppt ps- psa psb psc pse psi psn pso psp pss pst pt- pta ptb ptc pte pti ptn pto ptp pts ptt saa sab sac sae sai san sao sap sas sat sba sbb sbc sbe sbi sbn sbo sbp sbs sbt sca scb scc sce sci scn sco scp scs sct se- sea seb sec see sei sen seo sep ses set sia sib sic sie sii sin sio sip sis sit sna snb snc sne sni snn sno snp sns snt soa sob soc soe soi son soo sop sos sot spa spb spc spe spi spn spo spp sps spt ss- ssa ssb ssc sse ssi ssn sso ssp sss sst sta stb stc ste sti stn sto stp sts stt taa tab tac tae tai tan tao tap tas tat tba tbb tbc tbe tbi tbn tbo tbp tbs tbt tca tcb tcc tce tci tcn tco tcp tcs tct te- tea teb tec tee tei ten teo tep tes tet tia tib tic tie tii tin tio tip tis tit tna tnb tnc tne tni tnn tno