B33113313132313113313223313331323132333132332133313331323133313112132322121   >>    B3311331313231311331322331333132313233313233213331333132313331311213232212   <<    B33113313132313113313223313331323132333132332133313331323133313112132322123   >>      B33113313132313113313223313331323132333132332133313331323133313112132322122   >>