U1N1G2R1O1U1P3
10 points
UNGROUP is validvalid
to separate from a group [v UNGROUPED, UNGROUPING, UNGROUPS]
to separate from a group [v -ED, -ING, -S]
to separate from a group [v UNGROUPED, UNGROUPING, UNGROUPS]
to separate from a group [v -ED, -ING, -S]