For example, 50Xab1M5.
50: the 50 person filled out the questionaire.
X: The questionaire is numer X.
ab: He choose a and b as his answer.
1: He put the questionaire back to box 1.
M: He is a male.
5: And he has 5 surroing people.
For example, 21Jk2F1
21: the 21st person fille out the questionaire.
J: the quesionaire number is J
k: she choose k as her answer
2: she put the question in box 2
F: she is a female
1: she is the only person thinking about this question