C3123121111113313121111331323133313331323133311233132313232323221   >>    C312312111111331312111133132313331333132313331123313231323232322   <<    C3123121111113313121111331323133313331323133311233132313232323223   >>      C3123121111113313121111331323133313331323133311233132313232323222   >>