C11111211113313112113313331333133313331322133313331323131121321   >>    C1111121111331311211331333133313331333132213331333132313112132   <<    C11111211113313112113313331333133313331322133313331323131121323   >>      C11111211113313112113313331333133313331322133313331323131121322   >>