C1111233131211111211113313331333133313331312331333132322121311211321   >>    C111123313121111121111331333133313331333131233133313232212131121132   <<    C1111233131211111211113313331333133313331312331333132322121311211323   >>      C1111233131211111211113313331333133313331312331333132322121311211322   >>