B3313221211233132322331321123233313231333132233133313331323223313233321   >>    B331322121123313232233132112323331323133313223313331333132322331323332   <<    B3313221211233132322331321123233313231333132233133313331323223313233323   >>      B3313221211233132322331321123233313231333132233133313331323223313233322   >>