C3121113331313231323132333131313231323131323223313233313233313331321   >>    C312111333131323132313233313131323132313132322331323331323331333132   <<    C3121113331313231323132333131313231323131323223313233313233313331323   >>      C3121113331313231323132333131313231323131323223313233313233313331322   >>