-vac aaaa aaac aaad aaav aaca aacc aacd aact aacv aada aadc aadt aata aatc aatt aava ac-t acaa acac acad acat acca accc accd acct acda acdc acdt acta actc actt actv acvv adaa adac adad adat adcc adda addc addd adta advt at-t ataa atac atad atat atca atcc atdt atta avat avcc avda avva c-cd caaa caac caat cac- caca cacc cada cadc cadd cat- cata catc catd catt catv cava ccaa ccac ccad ccat ccca cccc cccv ccdc cctc cctt cctv cdaa cdac cdad cdda cdtv cdvd ctca ctta ctvt cvac cvca cvcc d-tv daad daca dact dada data datt dava dcca dccc dcct dccv dctc dctv dcvd dddd ddtv dtaa dtac dtcc dvda taa- taat taca tacc tact tacv tada tata tatt tatv tava tcad tcca tccc tcdd tctc tdac tdtv tttt tvac tvad tvtv vaad vaat vaca vada vata vatt vava vcat vdcc vtac vvvv