B33113313132313113313223313331323132313331313232233132322112113313112121   >>    B3311331313231311331322331333132313231333131323223313232211211331311212   <<    B33113313132313113313223313331323132313331313232233132322112113313112123   >>      B33113313132313113313223313331323132313331313232233132322112113313112122   >>