ively, showing a state where the application brush part and the arrangement brush part according to the fourth embodiment of the present invention are coupled to each other; FIGS. 16 a, and 16 b and 16 c are a front view and bottom views showing application brush parts according to further embodiments of the present invention; FIGS. 17 a, and 17 b and 17 c are a front view and bottom views showing