B - Playing Cards Validation

Score : $200$ points

Problem Statement

You are given $N$ strings, each of length $2$, consisting of uppercase English letters and digits. The $i$-th string is $S_i$.
Determine whether the following three conditions are all satisfied.
・For every string, the first character is one of H, D, C, and S.
・For every string, the second character is one of A, 2, 3, 4, 5, 6, 7, 8, 9, T, J, Q, K.
・All strings are pairwise different. That is, if $i \neq j$, then $S_i \neq S_j$.

Constraints

• $1 \leq N \leq 52$
• $S_i$ is a string of length $2$ consisting of uppercase English letters and digits.

Input

The input is given from Standard Input in the following format:

$N$

$S_1$

$S_2$

$\vdots$

$S_N$

Output

If the three conditions are all satisfied, print Yes; otherwise, print No.

4
H3
DA
D3
SK

Yes

One can verify that the three conditions are all satisfied.

5
H3
DA
CK
H3
S7

No

Both $S_1$ and $S_4$ are H3, violating the third condition.

4
3H
AD
3D
KS

No

5
00
AA
XX
YY
ZZ

No