B33113313132313113313223313331323133313223313231333133313232211211112112121   >>    B3311331313231311331322331333132313331322331323133313331323221121111211212   <<    B33113313132313113313223313331323133313223313231333133313232211211112112123   >>      B33113313132313113313223313331323133313223313231333133313232211211112112122   >>