B33113313132313113313223313331323131323133313232233132221221231   >>    B3311331313231311331322331333132313132313331323223313222122123   <<    B33113313132313113313223313331323131323133313232233132221221233   >>      B33113313132313113313223313331323131323133313232233132221221232   >>