C1111133313331323223313331333133313233231311211331333132333112323321   >>    C111113331333132322331333133313331323323131121133133313233311232332   <<    C1111133313331323223313331333133313233231311211331333132333112323323   >>      C1111133313331323223313331333133313233231311211331333132333112323322   >>