B33113313132313113313223313331323132313231323131333132322331323132213112121   >>    B3311331313231311331322331333132313231323132313133313232233132313221311212   <<    B33113313132313113313223313331323132313231323131333132322331323132213112123   >>      B33113313132313113313223313331323132313231323131333132322331323132213112122   >>