B33113313132313113313223313331323133313222233132313331323221311   >>    B3311331313231311331322331333132313331322223313231333132322131   <<    B33113313132313113313223313331323133313222233132313331323221313   >>      B33113313132313113313223313331323133313222233132313331323221312   >>