-al -ol a-a a-b a-c aaa aab aac aad aal aao aap aar ab- aba abb abc abd abl abo abp abr ac- aca acb acc acd acl aco acp acr ad- ada adb adc add adl ado adp adr al- ala alb alc ald all alo alp alr aoa aob aoc aod aol aoo aop aor ap- apa apb apc apd apl apo app apr ar- ara arb arc ard arl aro arp arr b-p baa bab bac bad bal bao bap bar bba bbb bbc bbd bbl bbo bbp bbr bca bcb bcc bcd bcl bco bcp bcr bda bdb bdc bdd bdl bdo bdp bdr bla blb blc bld bll blo blp blr boa bob boc bod bol boo bop bor bpa bpb bpc bpd bpl bpo bpp bpr bra brb brd brl bro brp brr c-- caa cab cac cad cal cao cap car cba cbb cbc cbd cbl cbo cbp cbr cca ccb ccc ccd ccl cco ccp ccr cda cdb cdc cdd cdl cdo cdp cdr cl- cla clb clc cld cll clo clp clr co- coa cob coc cod col coo cop cor cpa cpb cpc cpd cpl cpo cpp cpr cra crb crc crd crl cro crp crr daa dab dac dad dal dao dap dar dba dbb dbc dbd dbl dbo dbp dbr dca dcb dcc dcd dcl dco dcp dcr dda ddb ddc ddd ddl ddo ddp ddr dl- dla dlb dlc dld dll dlo dlp dlr doa dob doc dod dol doo dop dor dpa dpb dpc dpd dpl dpo dpp dpr dra drb drc drd drl dro drp drr l-p la- laa lab lac lad lal lao lap lar lba lbb lbc lbd lbl lbo lbp lbr lca lcb lcc lcd lcl lco lcp lcr lda ldb ldc ldd ldl ldo ldp ldr lla llb llc lld lll llo llp llr loa lob loc lod lol loo lop lor lpa lpb lpc lpd lpl lpo lpp lpr lra lrb lrc lrd lro lrp lrr oaa oab oac oad oal oao oap oar ob- oba obb obc obd obl obo obp obr oc- oca ocb occ ocd ocl oco ocp ocr oda odb odc odd odl odo odp odr ola olb olc old oll olo olp oo- ooa oob ooc ood ool ooo oop oor op- opa opb opc opd opl opo opp opr or- ora orb orc ord orl oro orp orr p-p paa pab pac pad pal pao pap par pba pbb pbc pbd pbl pbo pbp pbr pca pcb pcc pcd pcl pco pcp pcr pda pdb pdc pdd pdl pdo pdp pdr pla plb plc pld pll plo plp plr poa pob poc pod pol poo pop por ppa ppb ppc ppd ppl ppo ppp ppr pra prb prc prd prl pro prp prr ra- raa rab rac rad ral rao rap rar rba rbb rbc rbd rbl rbo rbp rbr rca rcb rcc rcd rcl rco rcp rcr rda rdb rdc rdd rdl rdo rdp rdr rla rlc rld rll rlo rlp rlr roa rob roc rod rol roo rop ror rpa rpb rpc rpd rpl rpo rpp rpr rra rrb rrc rrd rrl rrp rrr

a-do aaaa aaab aaac aaad aaal aaap aaar aaba aabb aabc aabd aabl aabp aaca aacb aacc aacd aacl aaco aacp aacr aada aadc aala aalc aald aall aalo aaoo aapa aapc aapl aapo aara aarc aard aaro aarp abaa abab abac abad abal abap abar abb- abba abbb abbo abbr abca abcb abcc abcd abcl abcp abcr abda abdo abla ablo aboa abob abod abol aboo abor abpa abpc abpd abpp abpr abra abrc abro acaa acab acac acad acap acar acba acbl acca accc accd acco accp acda acdb acdc acdp acla aclc aclr acoa acod acol acop acor acpa acpd acpr acr- acra acrc acro acrr adaa adab adac adad adal adao adap adar adba adbc adcc adda addc addd addl addo addr adob adoc adod adoo ador adp- adra adro al-p alaa alac alad alal alao alap alar alb- alba albc albo alca alcc alco ald- alda aldl aldo all- alla alll allo allr aloa aloc alod alol aloo alop alor alpa alpl alpo alro aoba aoca aola aopo aora aorb apac apal apao apap apar apba apbr apca apcb apcc apcd apco apcr apda apdd apl- apla aplp apo- apoc apod apoo apop apor appa appc appd appl appr apra aprc apro arab arac arad aral arap arar arba arc- arca arco arda ardc ardl ardo arla arlo aroa arob arod aroo aror arpa arpl arr- arra arrc arro arrr baaa baad baal baar baba babb babo babr bac- baca bacc baco bada badb badd bado badr bala balc bald ball balo baol bapa bapc bapp bar- bara barb barc bard baro barr bbad bbbb bbdd bbdo bblb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bccl bcda bcor bcpl bcpp bcra bd-r bdbc bddc bdpc blaa blab blac blad bldc bldr blob bloc blod bloo blop blrc boab boac boad boal boar boba bobb bobo boca boco boda bodb bodo bola bold boll bolo boob booc bood bool boop boor bopa bopp bor- bora bord boro borr bpcp bpda bprc bprd brab brac brad brao brca brcb brda brdo brlp broa brob broc brod brol broo bror brrr c-bo c-cd caaa caab caac caal caap caba cabo cac- caca cacc caco cacr cada cadc cadd cado cadr cala calc cald call calo calp caod caol caor capa capb capc capd capo capp cara carb carc card carl caro carp carr cbac cbal cbar cbbc cbca cbcc cbcl cbcp cbcr cbdb cbdc cbdo cblb cblc cbol cbpc cbpp cbrd cbrl ccaa ccab ccac ccad ccap ccar ccba ccbc ccca cccb cccc cccl cccp ccdc ccdp ccdr ccla cclc ccob ccoc ccod ccpa ccpl ccpp ccpr ccra ccrc ccrl ccrp cd-r cdaa cdac cdad cdba cdda cddb cddl cddr clab clad clap clar clcd cldc cldr clob clod cloo clop clor clpb clpp