What will be the the width of the column strip in the case of 2 different spans in the same direction?

Say we have a plan of a building as follows and it is required to be designed using DDM (Direct Design Method). since the moment needs to distributed laterally into a column and middle strips and according to ACI 8.4.1.5 “A column strip is a design strip with a width on each side of a column centerline equal to the lesser of 0.25ℓ2 and 0.25ℓ1.” but in this case, both L1 and L2 have different spans and i dont know what to choose.