a-do aaaa aaab aaad aaal aaav aaba aabb aabd aabl aada aala aald aall aalo aaoo aava abaa abab abad abal abb- abba abbb abbo abda abdo abla ablo ablv aboa abob abod abol aboo abov abva abvd adaa adab adad adal adao adba adda addd addl addo adob adod adoo advb alaa alad alal alao alb- alba albo ald- alda aldl aldo all- alla alll allo aloa alod alol aloo alov alva alvo aoba aola avab aval avao avda avlb avva avvo baaa baad baal baba babb babo bada badb badd bado bala bald ball balo baol bava bbad bbbb bbdd bbdo bblb bdav blaa blab blad blob blod bloo blvd boab boad boal boba bobb bobo boda bodb bodo bola bold boll bolo boob bood bool bova bovo d-bo daab daad daal daba dabb dabo dada dado dala dall dalo dava dddd dlab dlbd dlvo doab doal doba dobb dobl dod- doda dodd dodo dola dold doll dolo doob dood dool dvda dvla dvoa dvvl laaa laad laal laba labo lada ladd lado lala lald lall lalo lava lavo lddv llao lldb llll lloa llod lloo lo-v load lob- loba lobb lobo loda lola lold loll lolo loob lood lool lovo lvad lvov oall obad obal obba obbo obla obol odal odbo odda oddd odla odoo odva olav olba olbo oldb olla ollo olov ooaa ooba ooda oola oold oolo oooo oval ovda ovo- ovod ovol ovoo vaad vaal vada vado vala vald vall valo vava vlab vlad vlba vldb vldl voad voda vodo vola vold voll volo vool vvob vvvv