The term 'arranged into groups' can be expressed in three different ways using the solutions from the crossword: SORTED (6 letters), SORT (4 letters), and SETS (4 letters). Sorted means to arrange in order, SORT means to arrange according to type, and sets means to arrange into distinct groups. Therefore, the term 'arranged into groups' can be interpreted as arranging items into distinct groups, ordering them according to type, or arranging them in order.