D233313133313221323132322331311211331323133112121211113313221221   >>    D23331313331322132313232233131121133132313311212121111331322122   <<    D233313133313221323132322331311211331323133112121211113313221223   >>      D233313133313221323132322331311211331323133112121211113313221222   >>