B3313221211233132322331321123233313231333132233133313331333132312323331   >>    B331322121123313232233132112323331323133313223313331333133313231232333   <<    B3313221211233132322331321123233313231333132233133313331333132312323333   >>      B3313221211233132322331321123233313231333132233133313331333132312323332   >>