D121213233313131333132333131211113313232213231333132322331323211   >>    D12121323331313133313233313121111331323221323133313232233132321   <<    D121213233313131333132333131211113313232213231333132322331323213   >>      D121213233313131333132333131211113313232213231333132322331323212   >>