B3311331313231311331322331333132313233313231333131133132322331321123232321   >>    B331133131323131133132233133313231323331323133313113313232233132112323232   <<    B3311331313231311331322331333132313233313231333131133132322331321123232323   >>      B3311331313231311331322331333132313233313231333131133132322331321123232322   >>