Excel 2007.
Columns A, B and C : contains dates in dd/mm/yyyy format.
Column D : contains number in single digit (1 in some cells, 2 in some cells; 3 in some cells) (Col D only single digit number either 1 or 2 or 3).
Example of one row:
A1 : 25-04-2018; B1: 27-04-2018; C1...