B33113313132313113313223313331323133313223313231333133313132322121333111   >>    B3311331313231311331322331333132313331322331323133313331313232212133311   <<    B33113313132313113313223313331323133313223313231333133313132322121333113   >>      B33113313132313113313223313331323133313223313231333133313132322121333112   >>