//dc draw
trans        step         nocells      noinputs     nooutputs
t3_dc1       1            1            2            2             
t3_dc2       2            2            2            2             
t3_dc3_1     3            2            3            2             
t3_dc3_2     3            2            3            2             
t3_dc4       4            1            2            2             
t3_dc5       2            2            2            2             
