B3313221211233132322331321123233313231333132233133313331333132331311   >>    B331322121123313232233132112323331323133313223313331333133313233131   <<    B3313221211233132322331321123233313231333132233133313331333132331313   >>      B3313221211233132322331321123233313231333132233133313331333132331312   >>