X bx c

X bx cX bx cX bx cX bx cX bx cX bx c
X bx cX bx cX bx cX bx cX bx cX bx c
X bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx cX bx c