-al -ol a-a a-b a-i aaa aab aae aai aal aao aas ab- aba abb abe abi abl abo abs aea aeb aee aei ael aeo aes ai- aia aib aie aii ail aio ais al- ala alb ale ali all alo als aoa aob aoe aoi aol aoo aos as- asa asb ase asi asl aso ass baa bab bae bai bal bao bas bba bbb bbe bbi bbl bbo bbs be- bea beb bee bei bel beo bes bi- bia bib bie bii bil bio bis bla blb ble bli bll blo bls boa bob boe boi bol boo bos bsa bsb bse bsi bsl bso bss eaa eab eae eai eal eao eas eba ebb ebe ebi ebl ebo ebs eea eeb eee eel eeo ees eia eib eie eii eil eio eis ela elb ele eli ell elo els eo- eoa eob eoe eoi eol eoo eos es- esa esb ese esi esl eso ess ia- iaa iab iae iai ial iao ias iba ibb ibe ibi ibl ibo ibs ie- iea iee iei iel ies iia iib iie iii iil iio iis il- ila ilb ile ili ill ilo ils io- ioa iob ioe ioi iol ioo ios is- isa isb ise isi isl iso iss la- laa lab lae lai lal lao las lba lbb lbe lbi lbl lbo lbs lea leb lee lei lel leo les lia lib lie lii lil lio lis lla llb lle lli lll llo lls loa lob loe loi lol loo los lsa lsb lse lsi lsl lso lss o-i oaa oab oae oai oal oao oas ob- oba obb obe obi obl obo obs oea oeb oee oei oel oeo oes oia oib oie oii oil oio ois ola olb ole oli oll olo ols oo- ooa oob ooi ool ooo oos os- osa osb ose osi osl oso oss saa sab sae sai sal sao sas sba sbb sbe sbi sbl sbo sbs se- sea seb see sei sel seo ses sia sib sie sii sil sio sis sla slb sle sli sll slo sls soa sob soe soi sol soo sos ss- ssa ssb sse ssi ssl sso sss