C11111211113313112113313331333133313331333132212111133132313121321   >>    C1111121111331311211331333133313331333133313221211113313231312132   <<    C11111211113313112113313331333133313331333132212111133132313121323   >>      C11111211113313112113313331333133313331333132212111133132313121322   >>