B33113313132313113313223313331323223313221123313231323223313331323133112111121   >>    B3311331313231311331322331333132322331322112331323132322331333132313311211112   <<    B33113313132313113313223313331323223313221123313231323223313331323133112111123   >>      B33113313132313113313223313331323223313221123313231323223313331323133112111122   >>