\problemname{Glitching screen}
\illustration{.4}{pic}{\href{https://unsplash.com/photos/oW_40ndUnRc}{Unsplash license, Zürich Stadelhofen by Ivan Heinzer via Unsplash}}%
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Petter is taking the local train in a new city
for the first time. He is well prepared and
have memorized the names of all the stops. However,
some of the pixels on the monitor that displays
the upcoming stop are broken. Can you help him
decide what the next stop is?

\section*{Input}
The first line of input consists of three integers 
$1 \leq h \leq 100$, $1 \leq w \leq 100$ and 
$1 \leq n \leq 100$, the height and width of the 
screen in pixels and the number of train stops, respectively. Then there 
are $h \cdot n$ lines, where line $i\cdot h$ to 
$i\cdot h + h - 1$ shows how train stop $i$ is 
rendered on a fully functioning screen (for stops $i \in \{0, 1, 2, \ldots, n-1\}$). The input 
ends with $h$ more lines that shows the current 
screen. Pixels on the screen that are turned on 
are denoted by \texttt{x} and pixels that are turned off 
are denoted by a period (\texttt{.}). If a screen is broken, it means 
that one or more of the pixels are always off.

\section*{Output}
Output \texttt{yes} if you can tell him what the
next stop is, and \texttt{no} otherwise.
