Sorry for the late response.
I divided blur effects to 3 layers and set the time expressions.
fadeIn = .5;
holdOn = .2;
fadeOut = .3;
holdOff = 9;
t1 = fadeIn;
t2 = t1+holdOn;
t3 = t2+fadeOut;
t4 = t3+holdOff;
t = (time-inPoint)%t4;
if (t < t1)
easeIn(t,0,t1,0,100)
else if (t < t2)
100
else if (t < t3)
easeOut(t,t2,t3,100,0)
else
0