This deck provides pictures and Russian audio when possible. On the back, the Imperfect is on left and Perfect is on the right. Verb stress pattern numbers are based on Zaliznyak's system. If verb pairs are part of two different patterns, the pair will be found in the highest pattern number of the two. For example, if the Imperfect verb is pattern 1a and the Perfect verb is pattern 6a, the pair will be in group 6a.