C1111233131211111211113313331323133313231323223313331313311232321   >>    C111123313121111121111331333132313331323132322331333131331123232   <<    C1111233131211111211113313331323133313231323223313331313311232323   >>      C1111233131211111211113313331323133313231323223313331313311232322   >>