B3313221211233132322331321123233313231333132233133313331333132311312233231   >>    B331322121123313232233132112323331323133313223313331333133313231131223323   <<    B3313221211233132322331321123233313231333132233133313331333132311312233233   >>      B3313221211233132322331321123233313231333132233133313331333132311312233232   >>