C111113331333132322331333133313331323133313233213133313112133312121   >>    C11111333133313232233133313331333132313331323321313331311213331212   <<    C111113331333132322331333133313331323133313233213133313112133312123   >>      C111113331333132322331333133313331323133313233213133313112133312122   >>