How to assign input data for ANN to multiple outputs

I have a input string variable with numbers from 0-360. I want to train the neural network to categorize them into 26 even groups (the 26 outputs). The first ~ 14 numbers (0-14) should go to output 1, the next fourteen numbers (15-28) should go to output 2 etc.

I made output as eys(26) but I am having trouble assigning the right input. I am using fitnet. These are colour hue values (input) which I am assigning to alphabetical characters (output).

[Greg Heath]

Insufficient information.

PS: 0-360 is 361=19^2 . Therefore, 26 groups cannot have the same size