Dear All

How can I identify and list all cases with missing observation(denoted by .a) from a data set. Cases can have missing observation for any variable and once there is missing observation for a variable that case should be considered as having missing data.

An example of my dateset is below, (An example of the dataset containing only few cases, my dataset contains 12000 cases so I want to know if there is an easier way to do)

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Code:
* Example generated by -dataex-. To install: ssc install    dataex
clear
input byte(c2__1 c2__2 c2__3 c2__4 c2__5)
.a  0  0 .a 0
0  0  0  1 0
0  1  1  0 0
.a  1  0  0 0
.  .  .  . .
.a  .  .  . .
1  0  1  1 0
.  .  .  . .
0  1  0  0 0
0 .a .a  0 0
1  0  0  0 0
.  .  .  . .
1  0  1  0 0
1  1  1  0 1
.  .  .  . .
.  .  .  . .
0 .a  1  1 0
.  .  .  . .
.  .  .  . .
.  .  .  . .
end
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