B33113313132313113313223313331323331333132211331323133313221231   >>    B3311331313231311331322331333132333133313221133132313331322123   <<    B33113313132313113313223313331323331333132211331323133313221233   >>      B33113313132313113313223313331323331333132211331323133313221232   >>