# 1027: Print a frame

#### 题目描述

Draw a frame which has a height of H cm and a width of W cm. For example, the following figure shows a frame which has a height of 6 cm and a width of 10 cm.

##########
#........#
#........#
#........#
#........#
##########


#### 输入格式

The input consists of multiple datasets. Each dataset consists of two integers H and W separated by a single space.

The input ends with two 0 (when both H and W are zero).

#### 输出格式

For each dataset, print the frame made of '#' and '.'.

Print a blank line after each dataset.

#### 输入样例 复制

3 4
5 6
3 3
0 0


#### 输出样例 复制

####
#..#
####

######
#....#
#....#
#....#
######

###
#.#
###


• 3 ≤ H ≤ 300
• 3 ≤ W ≤ 300