Five ships- J, K, L, M, and N- are to be unloaded on five consecutive days beginning on Monday and ending on Friday according to the following conditions:
*Each ship takes exactly one day to unload.
*K must be unloaded on a day preceding the days M and N are unloaded
*L cannot be unloaded on a Tuesday
*M must be the second ship unloaded after J is unloaded. If K, M, and N are to be unloaded one immediately after the other in that order, the two days on which J can be unloaded are-