three draws
three possible cards
getting 2 specific (0 and 1)

000
001 <-
002
010 <-
011 <-
012 <-
020
021 <-
022
100 <-
101 <-
102 <-
110 <-
111
112
120 <-
121
122
200
201 <-
202
210 <-
211
212
220
221
222

result: 12/27