B33132212112331323223313211232333132313331322331333133313121121   >>    B3313221211233132322331321123233313231333132233133313331312112   <<    B33132212112331323223313211232333132313331322331333133313121123   >>      B33132212112331323223313211232333132313331322331333133313121122   >>