-al -ol a-a a-b a-i aaa aab aae aai aal aan aao aap aas ab- aba abb abe abi abl abn abo abp abs aea aeb aee aei ael aen aeo aep aes ai- aia aib aie aii ail ain aio aip ais al- ala alb ale ali all aln alo alp als an- ana anb ane ani anl ann ano anp ans aoa aob aoe aoi aol aon aoo aop aos ap- apa apb ape api apl apn apo app aps as- asa asb ase asi asl asn aso asp ass b-p baa bab bae bai bal ban bao bap bas bba bbb bbe bbi bbl bbn bbo bbp bbs be- bea beb bee bei bel ben beo bep bes bi- bia bib bie bii bil bin bio bip bis bla blb ble bli bll bln blo blp bls bna bnb bne bni bnl bnn bno bnp bns boa bob boe boi bol bon boo bop bos bpa bpb bpe bpi bpl bpn bpo bpp bps bsa bsb bse bsi bsl bsn bso bsp bss eaa eab eae eai eal ean eao eap eas eba ebb ebe ebi ebl ebn ebo ebp ebs eea eeb eee eel een eeo eep ees eia eib eie eii eil ein eio eip eis ela elb ele eli ell eln elo elp els en- ena enb ene eni enl enn eno enp ens eo- eoa eob eoe eoi eol eon eoo eop eos ep- epa epb epe epi epl epn epo epp eps es- esa esb ese esi esl esn eso esp ess ia- iaa iab iae iai ial ian iao iap ias iba ibb ibe ibi ibl ibn ibo ibp ibs ie- iea iee iei iel ien iep ies iia iib iie iii iil iin iio iip iis il- ila ilb ile ili ill iln ilo ilp ils in- ina inb ine ini inl inn ino inp ins io- ioa iob ioe ioi iol ion ioo iop ios ipa ipb ipe ipi ipl ipn ipo ipp ips is- isa isb ise isi isl isn iso isp iss l-p la- laa lab lae lai lal lan lao lap las lba lbb lbe lbi lbl lbo lbp lbs lea leb lee lei lel len leo lep les lia lib lie lii lil lin lio lip lis lla llb lle lli lll lln llo llp lls lna lnb lne lni lnl lnn lno lnp lns loa lob loe loi lol lon loo lop los lpa lpb lpe lpi lpl lpn lpo lpp lps lsa lsb lse lsi lsl lsn lso lsp lss n-i naa nab nae nai nal nan nao nap nas nba nbb nbe nbi nbl nbn nbo nbp nbs ne- nea neb nee nei nel nen neo nep nes nia nib nie nii nil nin nio nip nis nla nlb nle nli nll nln nlo nlp nls nna nnb nne nni nnl nnn nno nnp nns no- noa nob noe noi nol non noo nop nos npa npb npe npi npl npn npo npp nps nsa nsb nse nsi nsl nsn nso nsp nss o-i oaa oab oae oai oal oan oao oap oas ob- oba obb obe obi obl obn obo obp obs oea oeb oee oei oel oen oeo oep oes oia oib oie oii oil oin oio oip ois ola olb ole oli oll oln olo olp ols on- ona onb one oni onl onn ono onp ons oo- ooa oob ooi ool oon ooo oop oos op- opa opb ope opi opl opn opo opp ops os- osa osb ose osi osl osn oso osp oss p-p paa pab pae pai pal pan pao pap pas pba pbb pbe pbi pbl pbn pbo pbp pbs pea peb pee pei pel pen peo pep pes pia pib pie pii pil pin pio pip pis pla plb ple pli pll pln plo plp pls pn- pna pnb pne pni pnl pnn pno pnp pns poa pob poe poi pol pon poo pop pos ppa ppb ppe ppi ppl ppn ppo ppp pps ps- psa psb pse psi psl psn pso psp pss saa sab sae sai sal san sao sap sas sba sbb sbe sbi sbl sbn sbo sbp sbs se- sea seb see sei sel sen seo sep ses sia sib sie sii sil sin sio sip sis sla slb sle sli sll sln slo slp sls sna snb sne sni snl snn sno snp sns soa sob soe soi sol son soo sop sos spa spb spe spi spl spn spo spp sps ss- ssa ssb sse ssi ssl ssn sso ssp sss