B3313221211233132322331321123233313231333132233133313331333131232212311   >>    B331322121123313232233132112323331323133313223313331333133313123221231   <<    B3313221211233132322331321123233313231333132233133313331333131232212313   >>      B3313221211233132322331321123233313231333132233133313331333131232212312   >>