-vac a-do aaaa aaac aaad aaas aaav aaca aacc aacd aaco aacs aacv aada aadc aads aaoo aasa aasc aasd aass aava acaa acac acad acas acca accc accd acco accs acda acdc acds acoa acod acos acsa acsc acsd acss acvs acvv adaa adac adad adao adas adcc adcs adda addc addd addo adds adoc adod adoo ados adsa adso adss advs aoca aocs aosd aoss asaa asac asad asao asas asc- asca ascc asco asda asdo asds asoc asod asos assa assc assd asso asss asva asvd asvs avao avas avcc avco avda avos avva avvo c-cd caaa caac caas cac- caca cacc caco cada cadc cadd cado cads caod caos casa casc casd caso cass cava cavo cavs ccaa ccac ccad ccas ccca cccc cccs cccv ccdc ccds ccoc ccod ccsa ccsd ccss ccvo ccvs cdaa cdac cdad cdcs cdda cdos cdss cdvd coad coas coca coco coda codd cods cood coos cosa cosc coso coss cova covo csaa csac csao csas csav cscc cscd csco cscs csda csos cssa cssd cvac cvas cvca cvcc cvsd cvss daad daas daca dacs dada dado dads daos dasa dasc dasd dass dava dcas dcca dccc dccs dccv dcds dcos dcsc dcss dcvd dddd ddoc ddss doas doca doco docs dod- doda dodd dodo dods dood doos dosa doso doss dsac dscc dscs dsda dsoa dsos dssa dssc dsvd dvas dvcs dvda dvds dvoa oasc oass oavs ocac ocad ocas occa occc ocds ocos ocsa odac odas odda oddd odds odoo odos odso odva ooaa ooda oooo ooos oosa osas osca oscc osco osdv osoo osos osov ossa ossd osso ovcs ovda ovo- ovod ovoo s-os sa-c saac saad saas saca sacc sacd saco sacs sada sadc sadd sado sads saos sasa sasc sasd saso sass sava savo savs scaa scac scad scas sccc sccs scda scdc scds scoo scsa scsc scsd scso sdcc sdco sdcv sddc sdds sdsc sdss soad soas soca soco socs soda sodd sodo sods sood soos sosa soso soss sosv sova sovo sovs ssaa ssac ssao ssas ssca sscc sscs ssdc ssdd ssoc sssa sssc ssss svcc svcs svdo svod svsc vaad vaas vaca vaco vacs vada vado vads vas- vasa vaso vass vava vavs vcds vdcc vdso voad voca voda vodo vooc vosa voso voss vssc vvvv