C312312111133131212111133133313231333133313331322132313231132321   >>    C31231211113313121211113313331323133313331333132213231323113232   <<    C312312111133131212111133133313231333133313331322132313231132323   >>      C312312111133131212111133133313231333133313331322132313231132322   >>