C312312111111331312111133133313231333133313112331323133313221323221121   >>    C31231211111133131211113313331323133313331311233132313331322132322112   <<    C312312111111331312111133133313231333133313112331323133313221323221123   >>      C312312111111331312111133133313231333133313112331323133313221323221122   >>