B3313221211233132322331321123233313231333132233133313331333131133112331   >>    B331322121123313232233132112323331323133313223313331333133313113311233   <<    B3313221211233132322331321123233313231333132233133313331333131133112333   >>      B3313221211233132322331321123233313231333132233133313331333131133112332   >>