Two cuboids with a length of 5 decimeters, a width of 3 decimeters and a height of 2 decimeters are used to form a large cuboid. How many different spellings are there?
用两个长5分米，宽3分米，高2分米的长方体，拼成一个大长方体，一共有多少种不同的拼法．
<result>3</result>