C131121333133313233213331333133313331333133313113313331211111322312211331   >>    C13112133313331323321333133313331333133313331311331333121111132231221133   <<    C131121333133313233213331333133313331333133313113313331211111322312211333   >>      C131121333133313233213331333133313331333133313113313331211111322312211332   >>