B33132212112331323223313211232333132313331322331333133313331311221123231211   >>    B3313221211233132322331321123233313231333132233133313331333131122112323121   <<    B33132212112331323223313211232333132313331322331333133313331311221123231213   >>      B33132212112331323223313211232333132313331322331333133313331311221123231212   >>