B3311331313231311331322331333132313331323223211113313231333131211111323211   >>    B331133131323131133132233133313231333132322321111331323133313121111132321   <<    B3311331313231311331322331333132313331323223211113313231333131211111323213   >>      B3311331313231311331322331333132313331323223211113313231333131211111323212   >>