C11111211113313112113313331333133313231121131211113313223313232232132321   >>    C1111121111331311211331333133313331323112113121111331322331323223213232   <<    C11111211113313112113313331333133313231121131211113313223313232232132323   >>      C11111211113313112113313331333133313231121131211113313223313232232132322   >>