B33132212112331323223313211232333132313331322331333133313331323223313331313121   >>    B3313221211233132322331321123233313231333132233133313331333132322331333131312   <<    B33132212112331323223313211232333132313331322331333133313331323223313331313123   >>      B33132212112331323223313211232333132313331322331333133313331323223313331313122   >>