a activityA 3
a activityB 2
a activityC 3
a activityD 2
a activityE 1
a activityF 3
a activityG 2
a activityH 1
a activityK 4
d activityA:STOP activityC:START
d activityA:STOP activityD:START
d activityB:STOP activityD:START
d activityB:STOP activityE:START
d activityC:STOP activityF:START
d activityD:STOP activityF:START
d activityD:STOP activityG:START
d activityE:STOP activityG:START
d activityE:STOP activityK:START
d activityF:STOP activityH:START
d activityG:STOP activityH:START
d activityK:STOP activityH:START