Ext Dimensions for simple modules of block 1 for U3(4) in characteristic 5

First column gives names of simples in the Basic algebra.
φi refers to the corresponding simple in the Atlas of Brauer Characters.

φ4 φ3 φ2
1 φ4 0 1 0
2 φ3 1 0 1
3 φ2 0 1 1