C31231211113313121211113313331323133313231133133313331323221211233221   >>    C3123121111331312121111331333132313331323113313331333132322121123322   <<    C31231211113313121211113313331323133313231133133313331323221211233223   >>      C31231211113313121211113313331323133313231133133313331323221211233222   >>