This will now be described with respect to FIGS. 7A and 7B which is similar to FIGS. 6A and 6B. In FIGS. 7A and 7B, steps 1 to 4, 11, steps A1, A2, and steps V1 to V3 are similar to those having corresponding reference symbols of FIGS. 6A and 6B and will not be described further.