C11111333133313331211211331333133313331323133313331333133313133322121   >>    C1111133313331333121121133133313331333132313331333133313331313332212   <<    C11111333133313331211211331333133313331323133313331333133313133322123   >>      C11111333133313331211211331333133313331323133313331333133313133322122   >>