-al -ic -ol a-a a-b a-c a-i aaa aab aac aai aal aao aap aas ab- aba abb abc abi abl abo abp abs ac- aca acb acc aci acl aco acp acs ai- aia aib aic aii ail aio aip ais al- ala alb alc ali all alo alp als aoa aob aoc aoi aol aoo aop aos ap- apa apb apc api apl apo app aps as- asa asb asc asi asl aso asp ass b-p baa bab bac bai bal bao bap bas bba bbb bbc bbi bbl bbo bbp bbs bca bcb bcc bci bcl bco bcp bcs bi- bia bib bic bii bil bio bip bis bla blb blc bli bll blo blp bls boa bob boc boi bol boo bop bos bpa bpb bpc bpi bpl bpo bpp bps bsa bsb bsc bsi bsl bso bsp bss c-- caa cab cac cai cal cao cap cas cba cbb cbc cbi cbl cbo cbp cbs cca ccb ccc cci ccl cco ccp ccs ci- cia cib cic cii cil cio cip cis cl- cla clb clc cli cll clo clp cls co- coa cob coc coi col coo cop cos cpa cpb cpc cpi cpl cpo cpp cps csa csb csc csi csl cso csp css ia- iaa iab iac iai ial iao iap ias iba ibb ibc ibi ibl ibo ibp ibs ica icb icc ici icl ico icp ics iia iib iic iii iil iio iip iis il- ila ilb ilc ili ill ilo ilp ils io- ioa iob ioc ioi iol ioo iop ios ipa ipb ipc ipi ipl ipo ipp ips is- isa isb isc isi isl iso isp iss l-p la- laa lab lac lai lal lao lap las lba lbb lbc lbi lbl lbo lbp lbs lca lcb lcc lci lcl lco lcp lcs lia lib lic lii lil lio lip lis lla llb llc lli lll llo llp lls loa lob loc loi lol loo lop los lpa lpb lpc lpi lpl lpo lpp lps lsa lsb lsc lsi lsl lso lsp lss o-i oaa oab oac oai oal oao oap oas ob- oba obb obc obi obl obo obp obs oc- oca ocb occ oci ocl oco ocp ocs oia oib oic oii oil oio oip ois ola olb olc oli oll olo olp ols oo- ooa oob ooc ooi ool ooo oop oos op- opa opb opc opi opl opo opp ops os- osa osb osc osi osl oso osp oss p-p paa pab pac pai pal pao pap pas pba pbb pbc pbi pbl pbo pbp pbs pca pcb pcc pci pcl pco pcp pcs pia pib pic pii pil pio pip pis pla plb plc pli pll plo plp pls poa pob poc poi pol poo pop pos ppa ppb ppc ppi ppl ppo ppp pps ps- psa psb psc psi psl pso psp pss saa sab sac sai sal sao sap sas sba sbb sbc sbi sbl sbo sbp sbs sca scb scc sci scl sco scp scs sia sib sic sii sil sio sip sis sla slb slc sli sll slo slp sls soa sob soc soi sol soo sop sos spa spb spc spi spl spo spp sps ss- ssa ssb ssc ssi ssl sso ssp sss