B331322121123313232233132112323331323133313223313331333133313222332211   >>    B33132212112331323223313211232333132313331322331333133313331322233221   <<    B331322121123313232233132112323331323133313223313331333133313222332213   >>      B331322121123313232233132112323331323133313223313331333133313222332212   >>