B3313221211233132322331321123233313231333132233133313331323132322331312321   >>    B331322121123313232233132112323331323133313223313331333132313232233131232   <<    B3313221211233132322331321123233313231333132233133313331323132322331312323   >>      B3313221211233132322331321123233313231333132233133313331323132322331312322   >>