-vac a-do a-ha aaaa aaac aaad aaah aaav aaca aacc aacd aach aaco aacv aada aadc aaha aaoo aava acaa acac acad acca accc accd acch acco acda acdc acha achh acho acoa acod acoh acvv adaa adac adad adah adao adcc adda addc addd addo adha adhd adho adoc adod adoo ahac ahad ahah ahha ahoa ahod ahva aoah aoca aodh avao avcc avco avda avva avvo c-cd caaa caac caah cac- caca cacc cach caco cada cadc cadd cado caha caod cava cavo ccaa ccac ccad ccca cccc cccv ccdc ccdh ccha ccoc ccod ccvo cdaa cdac cdad cdda cdvd chaa chac chad chah chao chav chca chch chha choc chod choh choo chov chvo coad coca coch coco coda codd coha coho cood cooh cova covo cvac cvca cvcc daad daca dada dado daha dava dcca dccc dccv dcvd dddd ddoc dhaa dhad dhao dhod doca doch doco dod- doda dodd dodo doha dohc dood dvda dvoa haad haco hada hadh haha haho hava hcca hccc hcch hdca hdda hdoc hdod hhaa hhhh hoac hoad hoca hoch hoda hodh hoha hoho hood hova hvac hvcc ocac ocad occa occc ocha odac odah odda oddd odoh odoo odva ohad ohcc ohho ohoh ooaa ooda ooha ooho oooh oooo ovda ovhd ovo- ovod ovoo vaad vaca vach vaco vada vado vaho vava vdcc vhhh voad voca voda vodo voho vooc vvvv