You can use the same initial pattern for different patterns.
A transformation pattern represents a model fragment (pattern) that occurs in a source model and is to be mapped to a particular model fragment in the target model. Assignments can also be taken into account.
Procedure
You linked the row of the transformation profile with the initial pattern of the preceding row.
If you move a row to the right, this row of the transformation pattern has the same initial pattern as the row above. You cannot add a pattern in the first cell. You can move a row only by one cell to the right or left.
If you want to move the row back to the left, click To the left.