C1111121111331311211331333133313231333133112111111331333132212323221   >>    C111112111133131121133133313331323133313311211111133133313221232322   <<    C1111121111331311211331333133313231333133112111111331333132212323223   >>      C1111121111331311211331333133313231333133112111111331333132212323222   >>